nymaim | f29354eb50976aaf4e3eb925ec83a0f32b570f8a22140f441584e0c764f094fa

Analysis

max time kernel
106s
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
30/09/2022, 09:17

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General

Target
file.exe
Size 230KB
Sample220930-k816rsdbb9
SHA256 f29354eb50976aaf4e3eb925ec83a0f32b570f8a22140f441584e0c764f094fa
MD5 c10d9d13ccf7f004d55c8e1194130d14
SHA1 f1812d1dfb40422fd27772ef25dfd978cd90ee99
SHA512 3ee73662614e1cc05b4ccd77ef357434582d2ef9a71ffc8a5a07a2fad82c4cd5337613bae3b62e4cd1391ce288bbc7132321e3cb24e195e4b61a619c3bf14c3d
SSDEEP 6144:hAFzemPx2RkjSuBvyAz/U7xVqf7VHHlq4XV5Ow:2AIM3uFbzMnEHFtvJ
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
2036	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-1-5-21-2891029575-1462575-1165213807-1000\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 11 IoCs

pid	pid_target	Process	procid_target
1444	4324	WerFault.exe	78
4964	4324	WerFault.exe	78
1636	4324	WerFault.exe	78
3376	4324	WerFault.exe	78
1064	4324	WerFault.exe	78
4792	4324	WerFault.exe	78
3424	4324	WerFault.exe	78
2780	4324	WerFault.exe	78
4312	4324	WerFault.exe	78
3840	4324	WerFault.exe	78
4796	4324	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
4932	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe
4324	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4324	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2036	Cleaner.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 3944	4324	file.exe	103
PID 4324 wrote to memory of 3944	4324	file.exe	103
PID 4324 wrote to memory of 3944	4324	file.exe	103
PID 3944 wrote to memory of 2036	3944	cmd.exe	105
PID 3944 wrote to memory of 2036	3944	cmd.exe	105
PID 4324 wrote to memory of 896	4324	file.exe	114
PID 4324 wrote to memory of 896	4324	file.exe	114
PID 4324 wrote to memory of 896	4324	file.exe	114
PID 896 wrote to memory of 4932	896	cmd.exe	118
PID 896 wrote to memory of 4932	896	cmd.exe	118
PID 896 wrote to memory of 4932	896	cmd.exe	118

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:4324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 452
  2⤵
  - Program crash
  PID:1444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 764
  2⤵
  - Program crash
  PID:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 784
  2⤵
  - Program crash
  PID:1636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 784
  2⤵
  - Program crash
  PID:3376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 872
  2⤵
  - Program crash
  PID:1064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 928
  2⤵
  - Program crash
  PID:4792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1000
  2⤵
  - Program crash
  PID:3424
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1364
  2⤵
  - Program crash
  PID:2780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\m1gmcqoS02Fv03SWV7p4Z0fnS\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3944
- - C:\Users\Admin\AppData\Local\Temp\m1gmcqoS02Fv03SWV7p4Z0fnS\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\m1gmcqoS02Fv03SWV7p4Z0fnS\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1376
  2⤵
  - Program crash
  PID:4312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 1636
  2⤵
  - Program crash
  PID:3840
- 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:896
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    PID:4932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4324 -s 512
  2⤵
  - Program crash
  PID:4796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4324 -ip 4324
1⤵
PID:1232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4324 -ip 4324
1⤵
PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4324 -ip 4324
1⤵
PID:4460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4324 -ip 4324
1⤵
PID:1436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 4324 -ip 4324
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4324 -ip 4324
1⤵
PID:988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4324 -ip 4324
1⤵
PID:3592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4324 -ip 4324
1⤵
PID:460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4324 -ip 4324
1⤵
PID:2972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4324 -ip 4324
1⤵
PID:1336

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4324 -ip 4324
1⤵
PID:4484

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\m1gmcqoS02Fv03SWV7p4Z0fnS\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\m1gmcqoS02Fv03SWV7p4Z0fnS\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\m1gmcqoS02Fv03SWV7p4Z0fnS\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/2036-145-0x000001BED34A0000-0x000001BED34E2000-memory.dmp

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memory/2036-146-0x00007FFFEDB40000-0x00007FFFEE601000-memory.dmp

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memory/2036-143-0x00007FFFEDB40000-0x00007FFFEE601000-memory.dmp

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memory/2036-142-0x000001BED1680000-0x000001BED17D8000-memory.dmp

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memory/4324-135-0x0000000000649000-0x000000000066F000-memory.dmp

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memory/4324-136-0x0000000002310000-0x000000000234F000-memory.dmp

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memory/4324-132-0x0000000000649000-0x000000000066F000-memory.dmp

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memory/4324-134-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/4324-137-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/4324-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4324-133-0x0000000002310000-0x000000000234F000-memory.dmp

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memory/4324-153-0x0000000000400000-0x0000000000597000-memory.dmp

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