nymaim | 3a978ceeb455e626596f38b479690abb82a464833f2e9f25ca14afca6f6f9b9a

Analysis

max time kernel
105s
max time network
147s
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, 07:03

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General

Target
file.exe
Size 415KB
Sample220928-hvb9dagdbm
SHA256 3a978ceeb455e626596f38b479690abb82a464833f2e9f25ca14afca6f6f9b9a
MD5 fe580254d84973123f5b5088daadacf7
SHA1 0ef9e0dc36d81220a59d5997310f698e7f03a36c
SHA512 751eb1e331999de672ebf5358d8cffd4a567d99dfb306352dd45067dd2c7170f04465e584c4866d79644ba25b2a40dcd242a90bba924313b363c1e66c6c7af5a
SSDEEP 6144:mjhZEoUxuc1t4Pa68NEbNswqaybVqS0CR0iIpnigabwVfs:mjhZjfc1aWEhsPV4iMiB
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
812	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
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
4824	4892	WerFault.exe	79
4256	4892	WerFault.exe	79
2080	4892	WerFault.exe	79
1524	4892	WerFault.exe	79
4084	4892	WerFault.exe	79
4788	4892	WerFault.exe	79
1812	4892	WerFault.exe	79
3536	4892	WerFault.exe	79
3980	4892	WerFault.exe	79
4352	4892	WerFault.exe	79
1448	4892	WerFault.exe	79
2204	4892	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
4824	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4892	file.exe
4892	file.exe
4892	file.exe
4892	file.exe
4892	file.exe
4892	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4892	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	812	Cleaner.exe
Token: SeDebugPrivilege	4824	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 4604	4892	file.exe	105
PID 4892 wrote to memory of 4604	4892	file.exe	105
PID 4892 wrote to memory of 4604	4892	file.exe	105
PID 4604 wrote to memory of 812	4604	cmd.exe	107
PID 4604 wrote to memory of 812	4604	cmd.exe	107
PID 4892 wrote to memory of 4936	4892	file.exe	116
PID 4892 wrote to memory of 4936	4892	file.exe	116
PID 4892 wrote to memory of 4936	4892	file.exe	116
PID 4936 wrote to memory of 4824	4936	cmd.exe	120
PID 4936 wrote to memory of 4824	4936	cmd.exe	120
PID 4936 wrote to memory of 4824	4936	cmd.exe	120

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:4892
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 452
  2⤵
  - Program crash
  PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 764
  2⤵
  - Program crash
  PID:4256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 804
  2⤵
  - Program crash
  PID:2080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 804
  2⤵
  - Program crash
  PID:1524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 856
  2⤵
  - Program crash
  PID:4084
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 936
  2⤵
  - Program crash
  PID:4788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1008
  2⤵
  - Program crash
  PID:1812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1084
  2⤵
  - Program crash
  PID:3536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1388
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\4qXNcQGzuFN4SyQYZp\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4604
- - C:\Users\Admin\AppData\Local\Temp\4qXNcQGzuFN4SyQYZp\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\4qXNcQGzuFN4SyQYZp\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1384
  2⤵
  - Program crash
  PID:4352
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1672
  2⤵
  - Program crash
  PID:1448
- 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:4936
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 1696
  2⤵
  - Program crash
  PID:2204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4892 -ip 4892
1⤵
PID:4920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 4892 -ip 4892
1⤵
PID:4576

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4892 -ip 4892
1⤵
PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 4892 -ip 4892
1⤵
PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4892 -ip 4892
1⤵
PID:4244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4892 -ip 4892
1⤵
PID:348

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4892 -ip 4892
1⤵
PID:3568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4892 -ip 4892
1⤵
PID:3664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4892 -ip 4892
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4892 -ip 4892
1⤵
PID:3528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 4892 -ip 4892
1⤵
PID:1352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4892 -ip 4892
1⤵
PID:3292

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\4qXNcQGzuFN4SyQYZp\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\4qXNcQGzuFN4SyQYZp\Cleaner.exe
Size 4.2MB
SHA256 663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f
MD5 e89589df13ac2783f322449f63547468
SHA1 bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6
SHA512 9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6
SSDEEP 98304:B3D///UUrPV0vER7ehER7ehER7ehER7ehER7ehER7ehER7ehER7eG:Zacfffffffb
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\4qXNcQGzuFN4SyQYZp\Cleaner.exe
Size 4.2MB
SHA256 663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f
MD5 e89589df13ac2783f322449f63547468
SHA1 bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6
SHA512 9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6
SSDEEP 98304:B3D///UUrPV0vER7ehER7ehER7ehER7ehER7ehER7ehER7ehER7eG:Zacfffffffb
MD5 SHA1 SHA512 SSDEEP

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memory/812-142-0x00007FFAD9320000-0x00007FFAD9DE1000-memory.dmp

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memory/812-145-0x00007FFAD9320000-0x00007FFAD9DE1000-memory.dmp

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memory/812-141-0x00000283FCA00000-0x00000283FCA42000-memory.dmp

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memory/812-139-0x00000283FA3F0000-0x00000283FA572000-memory.dmp

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memory/4892-133-0x0000000000740000-0x000000000077F000-memory.dmp

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memory/4892-134-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/4892-132-0x0000000000813000-0x000000000083A000-memory.dmp

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memory/4892-144-0x0000000000400000-0x000000000046D000-memory.dmp

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memory/4892-143-0x0000000000813000-0x000000000083A000-memory.dmp

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memory/4892-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4892-152-0x0000000000813000-0x000000000083A000-memory.dmp

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memory/4892-153-0x0000000000400000-0x000000000046D000-memory.dmp

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