nymaim | 0003d39fdeaf2d242c347bc8bf5d8bebe911897349e1406cbb6e219d5c831cd7

Analysis

max time kernel
104s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
28/09/2022, 23:12

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General

Target
file.exe
Size 359KB
Sample220928-26tscahcf2
SHA256 0003d39fdeaf2d242c347bc8bf5d8bebe911897349e1406cbb6e219d5c831cd7
MD5 78f4b0a9cc4576da7d731e8df62a68e0
SHA1 18bb2bd974e768d82d54faac510cce2511f0c411
SHA512 8080a9f33d67c2aa2f6728b34d758f82266c9d91b01373786d5f07975e71bb1193d2ddccb30187aa97aa312f6549e5990fc88958965d0d72088334343ff16a4c
SSDEEP 6144:B1imbZ2ezDa3ReaWO2oTm6Y26BvVbVN6iga3wVfg:B/2ezDayro66Y2cbTp
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
2896	Cleaner.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 12 IoCs

pid	pid_target	Process	procid_target
3068	1496	WerFault.exe	78
372	1496	WerFault.exe	78
204	1496	WerFault.exe	78
1044	1496	WerFault.exe	78
2892	1496	WerFault.exe	78
4320	1496	WerFault.exe	78
4104	1496	WerFault.exe	78
4212	1496	WerFault.exe	78
1276	1496	WerFault.exe	78
4576	1496	WerFault.exe	78
1532	1496	WerFault.exe	78
396	1496	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
4188	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1496	file.exe
1496	file.exe
1496	file.exe
1496	file.exe
1496	file.exe
1496	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1496	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2896	Cleaner.exe
Token: SeDebugPrivilege	4188	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 3896	1496	file.exe	101
PID 1496 wrote to memory of 3896	1496	file.exe	101
PID 1496 wrote to memory of 3896	1496	file.exe	101
PID 3896 wrote to memory of 2896	3896	cmd.exe	103
PID 3896 wrote to memory of 2896	3896	cmd.exe	103
PID 1496 wrote to memory of 2844	1496	file.exe	116
PID 1496 wrote to memory of 2844	1496	file.exe	116
PID 1496 wrote to memory of 2844	1496	file.exe	116
PID 2844 wrote to memory of 4188	2844	cmd.exe	119
PID 2844 wrote to memory of 4188	2844	cmd.exe	119
PID 2844 wrote to memory of 4188	2844	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 452
  2⤵
  - Program crash
  PID:3068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 764
  2⤵
  - Program crash
  PID:372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 764
  2⤵
  - Program crash
  PID:204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 764
  2⤵
  - Program crash
  PID:1044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 856
  2⤵
  - Program crash
  PID:2892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 880
  2⤵
  - Program crash
  PID:4320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 884
  2⤵
  - Program crash
  PID:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 1064
  2⤵
  - Program crash
  PID:4212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 1388
  2⤵
  - Program crash
  PID:1276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3896
- - C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2896
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 1404
  2⤵
  - Program crash
  PID:4576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 1404
  2⤵
  - Program crash
  PID:1532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2844
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1496 -s 492
  2⤵
  - Program crash
  PID:396

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1496 -ip 1496
1⤵
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1496 -ip 1496
1⤵
PID:3352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 1496 -ip 1496
1⤵
PID:320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1496 -ip 1496
1⤵
PID:2324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1496 -ip 1496
1⤵
PID:3960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 1496 -ip 1496
1⤵
PID:5032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1496 -ip 1496
1⤵
PID:2096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1496 -ip 1496
1⤵
PID:4676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 1496 -ip 1496
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1496 -ip 1496
1⤵
PID:4840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1496 -ip 1496
1⤵
PID:2312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1496 -ip 1496
1⤵
PID:4696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\kxP2qstukGih89jOTE3IWEN7VEVYZ\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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memory/1496-144-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/1496-132-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/1496-153-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/1496-134-0x0000000000400000-0x000000000045E000-memory.dmp

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memory/1496-152-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/1496-133-0x00000000005F0000-0x000000000062F000-memory.dmp

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memory/1496-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1496-143-0x0000000000843000-0x000000000086A000-memory.dmp

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memory/2896-142-0x00007FFD77B20000-0x00007FFD785E1000-memory.dmp

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memory/2896-145-0x00007FFD77B20000-0x00007FFD785E1000-memory.dmp

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memory/2896-141-0x000002160C4A0000-0x000002160C4E2000-memory.dmp

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memory/2896-139-0x000002160A6D0000-0x000002160A828000-memory.dmp

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