Malware Analysis Report

2025-04-13 10:39

Sample ID 221228-2j5w4abg96
Target ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c
SHA256 f71001fd6cad52d9fd4fb030abce62f37e206356b6dae2d943f6378cb7ee2c0c
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

f71001fd6cad52d9fd4fb030abce62f37e206356b6dae2d943f6378cb7ee2c0c

Threat Level: Known bad

The file ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c was found to be: Known bad.

Malicious Activity Summary

nymaim discovery trojan

NyMaim

Executes dropped EXE

Checks computer location settings

Loads dropped DLL

Checks installed software on the system

Drops file in Program Files directory

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-12-28 22:37

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-12-28 22:37

Reported

2022-12-28 22:40

Platform

win7-20220812-en

Max time kernel

66s

Max time network

69s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.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\is-BM07O.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-AQPIJ.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-I1TJD.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-FJJDT.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-2DCH6.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\is-2E5FB.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\is-L8HKD.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-76F0U.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-D3D85.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-C87LG.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\is-IJ3KV.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\is-TFB5V.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-GSSG6.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-2N72O.tmp C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.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\SplitFiles123.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A
N/A N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 784 wrote to memory of 1428 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 1428 wrote to memory of 940 N/A C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 1252 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\wZKSRcC.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 940 wrote to memory of 2044 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2044 wrote to memory of 1912 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe

"C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe"

C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp

"C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp" /SL4 $60122 "C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe" 1776585 217600

C:\Program Files (x86)\Split Files\SplitFiles123.exe

"C:\Program Files (x86)\Split Files\SplitFiles123.exe"

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

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles123.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles123.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles123.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/784-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

memory/784-55-0x0000000000400000-0x000000000043B000-memory.dmp

memory/1428-58-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

C:\Users\Admin\AppData\Local\Temp\is-NFP2P.tmp\is-VE66A.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

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

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

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

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

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/784-65-0x0000000000400000-0x000000000043B000-memory.dmp

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

memory/940-67-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

memory/1428-73-0x0000000003A00000-0x0000000004B38000-memory.dmp

memory/940-74-0x0000000000400000-0x0000000001538000-memory.dmp

memory/940-75-0x0000000001AD0000-0x0000000002C08000-memory.dmp

memory/940-76-0x0000000001AD0000-0x0000000002C08000-memory.dmp

memory/940-77-0x0000000000400000-0x0000000001538000-memory.dmp

memory/940-78-0x0000000000400000-0x0000000001538000-memory.dmp

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

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

memory/1252-80-0x0000000000000000-mapping.dmp

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

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

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

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

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

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

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

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

memory/1428-86-0x0000000003A00000-0x0000000004B38000-memory.dmp

memory/940-87-0x0000000000400000-0x0000000001538000-memory.dmp

memory/940-88-0x0000000001AD0000-0x0000000002C08000-memory.dmp

memory/940-89-0x0000000010000000-0x000000001001B000-memory.dmp

memory/940-93-0x0000000000400000-0x0000000001538000-memory.dmp

memory/2044-94-0x0000000000000000-mapping.dmp

memory/1912-96-0x0000000000000000-mapping.dmp

memory/940-98-0x0000000000400000-0x0000000001538000-memory.dmp

memory/784-99-0x0000000000400000-0x000000000043B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-12-28 22:37

Reported

2022-12-28 22:40

Platform

win10v2004-20220812-en

Max time kernel

143s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe"

Signatures

NyMaim

trojan nymaim

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation C:\Program Files (x86)\Split Files\SplitFiles123.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.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-65RD6.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\is-APKEQ.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-0UO1K.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-NBTCP.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\is-AK3EG.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File opened for modification C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-OUFG8.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-7426Q.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\is-7GDMI.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-N196Q.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-2T06O.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-60E2K.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\language\is-S872C.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\is-V3Q89.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\unins000.dat C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp N/A
File created C:\Program Files (x86)\Split Files\is-3P1TM.tmp C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.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 2220 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp
PID 2220 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp
PID 2220 wrote to memory of 4012 N/A C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp
PID 4012 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 4012 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 4012 wrote to memory of 3356 N/A C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp C:\Program Files (x86)\Split Files\SplitFiles123.exe
PID 3356 wrote to memory of 4976 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe
PID 3356 wrote to memory of 4976 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe
PID 3356 wrote to memory of 4976 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe
PID 3356 wrote to memory of 1548 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 3356 wrote to memory of 1548 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 3356 wrote to memory of 1548 N/A C:\Program Files (x86)\Split Files\SplitFiles123.exe C:\Windows\SysWOW64\cmd.exe
PID 1548 wrote to memory of 4744 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1548 wrote to memory of 4744 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 1548 wrote to memory of 4744 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe

Processes

C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe

"C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe"

C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp

"C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp" /SL4 $601D0 "C:\Users\Admin\AppData\Local\Temp\ea4c68757a59e988f41b4e2e16d4cd2920931d948a89a3c34a512ed84c40924c.exe" 1776585 217600

C:\Program Files (x86)\Split Files\SplitFiles123.exe

"C:\Program Files (x86)\Split Files\SplitFiles123.exe"

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles123.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles123.exe" & exit

C:\Windows\SysWOW64\taskkill.exe

taskkill /im "SplitFiles123.exe" /f

Network

Country Destination Domain Proto
N/A 178.79.208.1:80 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 171.22.30.106:80 171.22.30.106 tcp
N/A 87.248.202.1:80 tcp
N/A 52.178.17.3:443 tcp
N/A 178.79.208.1:80 tcp
N/A 178.79.208.1:80 tcp

Files

memory/2220-132-0x0000000000400000-0x000000000043B000-memory.dmp

memory/2220-134-0x0000000000400000-0x000000000043B000-memory.dmp

memory/4012-135-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

C:\Users\Admin\AppData\Local\Temp\is-EKC0M.tmp\is-6P3CT.tmp

MD5 4f3db9263ab998737f14cfb0cc7da686
SHA1 1f3947a6b5c900f28a93abb7a097aea5efa76f58
SHA256 f8ce6681396db8b8a95cdf7dbf02b68c847922aeacd0277a52a4e5ca399f87aa
SHA512 60d5207b7af2dadf63aeb6123ed466e779cc9b04ca15f303416b348b8e5ee9c147ee578d5e586df749d1facf460c84090436a0d4944fdebd334373f0f6c18f8d

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

MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

memory/3356-139-0x0000000000000000-mapping.dmp

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

C:\Program Files (x86)\Split Files\SplitFiles123.exe

MD5 455efa18f18449a418965184fcde9904
SHA1 c1fd29073d379eaf88b6c5c17781557bb8afb7d9
SHA256 3019b717b0fa6bc9d858370ec79bea1e11566b6fb36275352e6b8610a3dbedc0
SHA512 9b8be8ed8d1e13a7b116a54870869812dea95c0605823dc0bc7213f6f0e010bf3512dcfa680c23efffadbf70dde848472f7f61041b1567a1b917c343881f0d5a

memory/3356-142-0x0000000000400000-0x0000000001538000-memory.dmp

memory/3356-143-0x0000000000400000-0x0000000001538000-memory.dmp

memory/4976-144-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe

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

C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\faYAwiFC.exe

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

memory/3356-147-0x0000000010000000-0x000000001001B000-memory.dmp

memory/2220-151-0x0000000000400000-0x000000000043B000-memory.dmp

memory/3356-152-0x0000000000400000-0x0000000001538000-memory.dmp

memory/1548-153-0x0000000000000000-mapping.dmp

memory/4744-154-0x0000000000000000-mapping.dmp

memory/3356-155-0x0000000000400000-0x0000000001538000-memory.dmp

memory/2220-156-0x0000000000400000-0x000000000043B000-memory.dmp