Malware Analysis Report

2025-06-16 05:09

Sample ID 221222-3hpddsfe23
Target file.exe
SHA256 b0cefcdca903547afa59d7bc788e29a60778b8c3500e3aaccbc8d6cab2bbc2f7
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

b0cefcdca903547afa59d7bc788e29a60778b8c3500e3aaccbc8d6cab2bbc2f7

Threat Level: Known bad

The file file.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: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Kills process with taskkill

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-22 23:31

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-22 23:31

Reported

2022-12-22 23:33

Platform

win7-20221111-en

Max time kernel

57s

Max time network

58s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.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-II05V.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-GVUPF.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\is-12VFS.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\is-0NRD3.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-LIFMH.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-I1M2L.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\is-9QHRA.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\is-3DGSH.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-BHVKT.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-60Q7J.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\is-RJF9I.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-0B024.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-GHBI9.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-FE7PP.tmp C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.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\SplitFiles117.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 836 wrote to memory of 1076 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1076 wrote to memory of 332 N/A C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1388 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rYMap.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 332 wrote to memory of 1704 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1704 wrote to memory of 1820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp

"C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp" /SL4 $70124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1682048 133120

C:\Program Files (x86)\Split Files\SplitFiles117.exe

"C:\Program Files (x86)\Split Files\SplitFiles117.exe"

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles117.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles117.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles117.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/836-54-0x0000000076AE1000-0x0000000076AE3000-memory.dmp

memory/836-55-0x0000000000400000-0x0000000000427000-memory.dmp

\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

memory/1076-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-LSA7L.tmp\is-JPEKP.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

\Users\Admin\AppData\Local\Temp\is-6D4RS.tmp\_isetup\_shfoldr.dll

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

\Users\Admin\AppData\Local\Temp\is-6D4RS.tmp\_isetup\_shfoldr.dll

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

\Users\Admin\AppData\Local\Temp\is-6D4RS.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

memory/332-66-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

memory/836-68-0x0000000000400000-0x0000000000427000-memory.dmp

memory/1076-70-0x0000000003A00000-0x0000000004B30000-memory.dmp

memory/332-71-0x0000000000400000-0x0000000001530000-memory.dmp

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

memory/332-75-0x0000000001B70000-0x0000000002CA0000-memory.dmp

memory/332-76-0x0000000001B70000-0x0000000002CA0000-memory.dmp

memory/332-77-0x0000000000400000-0x0000000001530000-memory.dmp

memory/332-78-0x0000000000400000-0x0000000001530000-memory.dmp

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

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

memory/1388-80-0x0000000000000000-mapping.dmp

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

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

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

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

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

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

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

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

memory/1076-86-0x0000000003A00000-0x0000000004B30000-memory.dmp

memory/332-87-0x0000000000400000-0x0000000001530000-memory.dmp

memory/332-88-0x0000000010000000-0x000000001001B000-memory.dmp

memory/332-90-0x0000000001B70000-0x0000000002CA0000-memory.dmp

memory/332-93-0x0000000000400000-0x0000000001530000-memory.dmp

memory/1704-94-0x0000000000000000-mapping.dmp

memory/1820-96-0x0000000000000000-mapping.dmp

memory/332-97-0x0000000000400000-0x0000000001530000-memory.dmp

memory/836-98-0x0000000000400000-0x0000000000427000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-22 23:31

Reported

2022-12-22 23:33

Platform

win10v2004-20220812-en

Max time kernel

108s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles117.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.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-LMLI2.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-BVV81.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-GKSMR.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\is-UI8H3.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-FGMJC.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-Q5V3C.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\is-7MOAV.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\is-SUFRN.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-NEPL3.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-Q1NIJ.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-G28PG.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\is-3825V.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\is-3I48O.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-C6VD3.tmp C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.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 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 1404 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp
PID 1404 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp
PID 1404 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp
PID 2752 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 2752 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 2752 wrote to memory of 1548 N/A C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp C:\Program Files (x86)\Split Files\SplitFiles117.exe
PID 1548 wrote to memory of 4980 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe
PID 1548 wrote to memory of 4980 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe
PID 1548 wrote to memory of 4980 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe
PID 1548 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1548 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 1548 wrote to memory of 3772 N/A C:\Program Files (x86)\Split Files\SplitFiles117.exe C:\Windows\SysWOW64\cmd.exe
PID 3772 wrote to memory of 1644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 3772 wrote to memory of 1644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 3772 wrote to memory of 1644 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp

"C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp" /SL4 $701BC "C:\Users\Admin\AppData\Local\Temp\file.exe" 1682048 133120

C:\Program Files (x86)\Split Files\SplitFiles117.exe

"C:\Program Files (x86)\Split Files\SplitFiles117.exe"

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles117.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles117.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles117.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
N/A 20.189.173.10:443 tcp
N/A 8.253.208.113:80 tcp
N/A 8.253.208.113:80 tcp
N/A 209.197.3.8:80 tcp

Files

memory/1404-132-0x0000000000400000-0x0000000000427000-memory.dmp

memory/2752-134-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-TU3Q0.tmp\is-I3M1L.tmp

MD5 7fd7ec3d32ed2a377fa18e8931475b2e
SHA1 30b386da1750701f78cbf65550f32661d8a4175f
SHA256 0290cf819c841a17d433eb1f768d2bad4ad57db003563a925688b1c86bef5455
SHA512 db2ac34c30b89c2551d9e16de7d748e4a984141c889707a9edd165f328e75260ff6fb8d7383fb7c7fcf10000c08a10af03a50ce7b3665a8e935c0d5d66e59334

C:\Users\Admin\AppData\Local\Temp\is-4UKRR.tmp\_iscrypt.dll

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

memory/1548-138-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles117.exe

MD5 00e8b154e8fbaae5fa6f71d2a1b6e688
SHA1 5c97eb81ceea2f0dd999e9edb2cdaf0bf94ab41a
SHA256 c3f83645bc8a0483b979d58b0860f447ffd36d501f00507c45a659c1ddea8a29
SHA512 1cdbcaa2fcf0560d2ab1ddab3d93a5eb4aec0f35e9e09e06e8881e273a82173b8c8a215b40ea64f8a7660fee7ed7d1a081793333b0b99a80d805732fa87610c5

memory/1548-141-0x0000000000400000-0x0000000001530000-memory.dmp

memory/1548-142-0x0000000000400000-0x0000000001530000-memory.dmp

memory/4980-143-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe

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

C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\w3QeUT6fKb2R.exe

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

memory/1548-146-0x0000000010000000-0x000000001001B000-memory.dmp

memory/1404-150-0x0000000000400000-0x0000000000427000-memory.dmp

memory/1548-151-0x0000000000400000-0x0000000001530000-memory.dmp

memory/3772-152-0x0000000000000000-mapping.dmp

memory/1644-153-0x0000000000000000-mapping.dmp

memory/1548-154-0x0000000000400000-0x0000000001530000-memory.dmp

memory/1404-155-0x0000000000400000-0x0000000000427000-memory.dmp