Malware Analysis Report

2025-06-16 05:09

Sample ID 221223-avfmssfe73
Target 11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe
SHA256 11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e
Tags
nymaim discovery trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e

Threat Level: Known bad

The file 11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe was found to be: Known bad.

Malicious Activity Summary

nymaim discovery trojan

NyMaim

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Checks installed software on the system

Drops file in Program Files directory

Enumerates physical storage devices

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-23 00:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-23 00:31

Reported

2022-12-23 00:34

Platform

win7-20221111-en

Max time kernel

66s

Max time network

67s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe"

Signatures

NyMaim

trojan nymaim

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\language\is-EM19K.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-PBI59.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\is-1C6PI.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\is-KTNVS.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-E7I83.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-HQE09.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7SU0D.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\is-CBJIQ.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\is-RRI0N.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-A5G90.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\is-8V1J0.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-3SQ8M.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7BAKT.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-J2CCG.tmp C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 2004 wrote to memory of 1996 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1996 wrote to memory of 1504 N/A C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1508 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1504 wrote to memory of 1664 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1664 wrote to memory of 1164 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe

"C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe"

C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp

"C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe" 1549880 51712

C:\Program Files (x86)\Split Files\SplitFiles.exe

"C:\Program Files (x86)\Split Files\SplitFiles.exe"

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles.exe" /f

Network

Country Destination Domain Proto
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp

Files

memory/2004-54-0x0000000075D61000-0x0000000075D63000-memory.dmp

memory/2004-55-0x0000000000400000-0x0000000000413000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp

MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

memory/1996-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp

MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

C:\Users\Admin\AppData\Local\Temp\is-B5QOT.tmp\is-KU5B8.tmp

MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

\Users\Admin\AppData\Local\Temp\is-8BK08.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-8BK08.tmp\_isetup\_shfoldr.dll

MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

\Users\Admin\AppData\Local\Temp\is-8BK08.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

memory/1504-66-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

memory/2004-67-0x0000000000400000-0x0000000000413000-memory.dmp

memory/1996-70-0x00000000038B0000-0x00000000049BC000-memory.dmp

\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

C:\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

memory/1504-74-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1504-75-0x0000000001A60000-0x0000000002B6C000-memory.dmp

memory/1504-76-0x0000000001A60000-0x0000000002B6C000-memory.dmp

memory/1504-77-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1504-78-0x0000000000400000-0x000000000150C000-memory.dmp

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/1508-80-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\IXqB05C3J.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/1996-86-0x00000000038B0000-0x00000000049BC000-memory.dmp

memory/1504-87-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1504-88-0x0000000001A60000-0x0000000002B6C000-memory.dmp

memory/1504-89-0x0000000010000000-0x000000001001B000-memory.dmp

memory/1504-93-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1664-94-0x0000000000000000-mapping.dmp

memory/1504-96-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1164-97-0x0000000000000000-mapping.dmp

memory/2004-98-0x0000000000400000-0x0000000000413000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-23 00:31

Reported

2022-12-23 00:34

Platform

win10v2004-20221111-en

Max time kernel

91s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A

Checks installed software on the system

discovery

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\Split Files\language\is-C4Q72.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7BUR9.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\is-NG3M5.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\is-VGQA6.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\is-C0V4M.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\is-SPHGN.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\is-0JJ4A.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-4P79B.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-CRUQE.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-MPB0T.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-RCT2D.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-FE5HI.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-DVTBV.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-BO7QG.tmp C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4336 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp
PID 4336 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp
PID 4336 wrote to memory of 3584 N/A C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp
PID 3584 wrote to memory of 4760 N/A C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 3584 wrote to memory of 4760 N/A C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 3584 wrote to memory of 4760 N/A C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp C:\Program Files (x86)\Split Files\SplitFiles.exe
PID 4760 wrote to memory of 1684 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe
PID 4760 wrote to memory of 1684 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe
PID 4760 wrote to memory of 1684 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe
PID 4760 wrote to memory of 1988 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 4760 wrote to memory of 1988 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 4760 wrote to memory of 1988 N/A C:\Program Files (x86)\Split Files\SplitFiles.exe C:\Windows\SysWOW64\cmd.exe
PID 1988 wrote to memory of 4152 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1988 wrote to memory of 4152 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1988 wrote to memory of 4152 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe

"C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe"

C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp

"C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp" /SL4 $9004E "C:\Users\Admin\AppData\Local\Temp\11636166097ac5a5700074e031416bf9b4ba944834977241f39beb7ae1b46e4e.exe" 1549880 51712

C:\Program Files (x86)\Split Files\SplitFiles.exe

"C:\Program Files (x86)\Split Files\SplitFiles.exe"

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles.exe" /f

Network

Country Destination Domain Proto
N/A 93.184.220.29:80 tcp
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 8.248.99.254:80 tcp
N/A 8.248.99.254:80 tcp
N/A 8.248.99.254:80 tcp
N/A 104.80.225.205:443 tcp
N/A 20.189.173.7:443 tcp
N/A 45.139.105.171:80 45.139.105.171 tcp
N/A 107.182.129.235:80 107.182.129.235 tcp
N/A 8.248.99.254:80 tcp
N/A 8.248.99.254:80 tcp
N/A 8.248.99.254:80 tcp
N/A 171.22.30.106:80 171.22.30.106 tcp

Files

memory/4336-132-0x0000000000400000-0x0000000000413000-memory.dmp

memory/3584-134-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp

MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

C:\Users\Admin\AppData\Local\Temp\is-8UIOF.tmp\is-1CD2Q.tmp

MD5 85b94e72c3f2d2b5464e2aaf3c9e242a
SHA1 ce7ccae5f50a990d059d59292d4a332979e162ba
SHA256 1441464feeef365573af18802c464769b7d3107624fde24604f57e386f97f1a7
SHA512 c0c27189989db482be9bda5b6b8b1441bdc5e9b0f3a414ccab4c4be516e7f99e25717845361a5b196114502faaaf21bec7aca91b497acd2e2396f49c31850880

C:\Users\Admin\AppData\Local\Temp\is-2836R.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/4336-138-0x0000000000400000-0x0000000000413000-memory.dmp

memory/4760-139-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

C:\Program Files (x86)\Split Files\SplitFiles.exe

MD5 7ffd60129c08fa01080aa09586bdfa17
SHA1 e57b6f9930011ff507b7d23120d5fb819c270892
SHA256 4c2df9cf721e117ae86decbdb7dbdd4c83db6fbf229b1c3413f8a780ae286926
SHA512 bb9e21076263a0c512b2802240934c865cc15d01237f27c504848c8f68ff5afd8230f08114483e0b9ca0f3f234af22b14a32b8614d3cb72566605b06e0722e67

memory/4760-142-0x0000000000400000-0x000000000150C000-memory.dmp

memory/4760-143-0x0000000000400000-0x000000000150C000-memory.dmp

memory/1684-144-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\nfbeAC.exe

MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

memory/4760-147-0x0000000000400000-0x000000000150C000-memory.dmp

memory/4760-148-0x0000000010000000-0x000000001001B000-memory.dmp

memory/1988-152-0x0000000000000000-mapping.dmp

memory/4152-153-0x0000000000000000-mapping.dmp

memory/4760-154-0x0000000000400000-0x000000000150C000-memory.dmp

memory/4336-155-0x0000000000400000-0x0000000000413000-memory.dmp