nymaim | 6b8fcffe18ce0d056ea53b7e3e64d19c78c5cbefd00cdf5cbdcc236695510259

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 02:07

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General

Target
file.exe
Size 220KB
Sample221003-cjzmmsdcdm
SHA256 6b8fcffe18ce0d056ea53b7e3e64d19c78c5cbefd00cdf5cbdcc236695510259
MD5 56330a39c82c3b3fb5b04429c3187b2e
SHA1 12f014f65d02a4b578b28c575a433ed9fa42c0ca
SHA512 6d72b85a99ff81feabd7c61910a276e41fcc0a94372a5e4adb820defd60d64f1e70463f1b7338c122f691e248fbd5cc928747a039b2804717a6165bbdd2ceb20
SSDEEP 3072:rzi1iGORd4XGOIWgyg147yLt+NNaiHCWQ2AQFnu3mvKkkqBJnEM86sSBtBoB:oivVLWgyPyh+j1HCWQQvKuv86sSf
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
2352	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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000800000001e64b-139.dat	autoit_exe
behavioral2/files/0x000800000001e64b-140.dat	autoit_exe

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

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
5080	4192	WerFault.exe	54
4916	4192	WerFault.exe	54
4836	4192	WerFault.exe	54
1028	4192	WerFault.exe	54
2520	4192	WerFault.exe	54
2256	4192	WerFault.exe	54
2468	4192	WerFault.exe	54
4288	4192	WerFault.exe	54
1168	4192	WerFault.exe	54
628	4192	WerFault.exe	54
3220	4192	WerFault.exe	54

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4192	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	Cleaner.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4192 wrote to memory of 2140	4192	file.exe	113
PID 4192 wrote to memory of 2140	4192	file.exe	113
PID 4192 wrote to memory of 2140	4192	file.exe	113
PID 2140 wrote to memory of 2352	2140	cmd.exe	115
PID 2140 wrote to memory of 2352	2140	cmd.exe	115

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 456
  2⤵
  - Program crash
  PID:5080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 776
  2⤵
  - Program crash
  PID:4916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 796
  2⤵
  - Program crash
  PID:4836
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 788
  2⤵
  - Program crash
  PID:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 840
  2⤵
  - Program crash
  PID:2520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 928
  2⤵
  - Program crash
  PID:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 928
  2⤵
  - Program crash
  PID:2468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 1212
  2⤵
  - Program crash
  PID:4288
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 780
  2⤵
  - Program crash
  PID:1168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 1372
  2⤵
  - Program crash
  PID:628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4192 -s 1396
  2⤵
  - Program crash
  PID:3220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\nmUE5lK8T9\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Users\Admin\AppData\Local\Temp\nmUE5lK8T9\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\nmUE5lK8T9\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4192 -ip 4192
1⤵
PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4192 -ip 4192
1⤵
PID:1636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 4192 -ip 4192
1⤵
PID:5036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4192 -ip 4192
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4192 -ip 4192
1⤵
PID:528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4192 -ip 4192
1⤵
PID:516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 4192 -ip 4192
1⤵
PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4192 -ip 4192
1⤵
PID:2512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4192 -ip 4192
1⤵
PID:1016

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4192 -ip 4192
1⤵
PID:3532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4192 -ip 4192
1⤵
PID:3336

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

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\nmUE5lK8T9\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\nmUE5lK8T9\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\nmUE5lK8T9\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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memory/2352-141-0x000001C000400000-0x000001C000556000-memory.dmp

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memory/2352-143-0x000001C01B720000-0x000001C01B762000-memory.dmp

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memory/2352-144-0x00007FF8830E0000-0x00007FF883BA1000-memory.dmp

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memory/4192-136-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/4192-135-0x000000000063D000-0x0000000000663000-memory.dmp

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memory/4192-134-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/4192-132-0x000000000063D000-0x0000000000663000-memory.dmp

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memory/4192-133-0x00000000022D0000-0x000000000230F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads