nymaim | 3453403f70ebbfc2c5bba18cacc34963ba3598fa3e4934f6ccf27ed59c6ee7fd

Analysis

max time kernel
98s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/09/2022, 03:40

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General

Target
file.exe
Size 215KB
Sample220927-d78e5adefq
SHA256 3453403f70ebbfc2c5bba18cacc34963ba3598fa3e4934f6ccf27ed59c6ee7fd
MD5 4e38088a62c908d4ab44d57701fcce68
SHA1 bf1191687e5032bc62177135340bfdc11581f332
SHA512 83c64fec6ab6b154253c2e9071e4ac459a6dfc427727355d36b2df3316b08debedef07413b19d99ca9e0828b672a21fb16e1b36500695ecec00b6f9664f28635
SSDEEP 3072:2OoiiTI5XDo54ncPgSdTnqW3arIkcAM8qV/7oumwmhYio3R26JUnX5B:2ADo+agSNqXmSw0pqbhs
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
4432	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 11 IoCs

pid	pid_target	Process	procid_target
1584	4968	WerFault.exe	79
2800	4968	WerFault.exe	79
3272	4968	WerFault.exe	79
920	4968	WerFault.exe	79
116	4968	WerFault.exe	79
1488	4968	WerFault.exe	79
3564	4968	WerFault.exe	79
3496	4968	WerFault.exe	79
4028	4968	WerFault.exe	79
3408	4968	WerFault.exe	79
2272	4968	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
904	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4968	file.exe
4968	file.exe
4968	file.exe
4968	file.exe
4968	file.exe
4968	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4968	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	Cleaner.exe
Token: SeDebugPrivilege	904	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4968 wrote to memory of 3488	4968	file.exe	96
PID 4968 wrote to memory of 3488	4968	file.exe	96
PID 4968 wrote to memory of 3488	4968	file.exe	96
PID 3488 wrote to memory of 4432	3488	cmd.exe	98
PID 3488 wrote to memory of 4432	3488	cmd.exe	98
PID 4968 wrote to memory of 3168	4968	file.exe	113
PID 4968 wrote to memory of 3168	4968	file.exe	113
PID 4968 wrote to memory of 3168	4968	file.exe	113
PID 3168 wrote to memory of 904	3168	cmd.exe	117
PID 3168 wrote to memory of 904	3168	cmd.exe	117
PID 3168 wrote to memory of 904	3168	cmd.exe	117

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:4968
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 452
  2⤵
  - Program crash
  PID:1584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 772
  2⤵
  - Program crash
  PID:2800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 760
  2⤵
  - Program crash
  PID:3272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 772
  2⤵
  - Program crash
  PID:920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 860
  2⤵
  - Program crash
  PID:116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 928
  2⤵
  - Program crash
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1008
  2⤵
  - Program crash
  PID:3564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1372
  2⤵
  - Program crash
  PID:3496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\ufVT9lQCGXDGIlNBoNkWbUUYPb\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3488
- - C:\Users\Admin\AppData\Local\Temp\ufVT9lQCGXDGIlNBoNkWbUUYPb\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\ufVT9lQCGXDGIlNBoNkWbUUYPb\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1388
  2⤵
  - Program crash
  PID:4028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1632
  2⤵
  - Program crash
  PID:3408
- 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:3168
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 492
  2⤵
  - Program crash
  PID:2272

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4968 -ip 4968
1⤵
PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 4968 -ip 4968
1⤵
PID:2556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4968 -ip 4968
1⤵
PID:1132

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4968 -ip 4968
1⤵
PID:1268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 4968 -ip 4968
1⤵
PID:1392

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4968 -ip 4968
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 4968 -ip 4968
1⤵
PID:2304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4968 -ip 4968
1⤵
PID:3612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 600 -p 4968 -ip 4968
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 4968 -ip 4968
1⤵
PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 656 -p 4968 -ip 4968
1⤵
PID:2756

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\ufVT9lQCGXDGIlNBoNkWbUUYPb\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\ufVT9lQCGXDGIlNBoNkWbUUYPb\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\ufVT9lQCGXDGIlNBoNkWbUUYPb\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/4432-139-0x00000240CE290000-0x00000240CE412000-memory.dmp

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memory/4432-141-0x00000240CFFA0000-0x00000240CFFE2000-memory.dmp

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memory/4432-142-0x00007FFBDBB20000-0x00007FFBDC5E1000-memory.dmp

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memory/4432-145-0x00007FFBDBB20000-0x00007FFBDC5E1000-memory.dmp

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memory/4968-132-0x0000000000919000-0x000000000093F000-memory.dmp

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memory/4968-143-0x0000000000919000-0x000000000093F000-memory.dmp

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memory/4968-144-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/4968-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4968-134-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/4968-133-0x0000000000830000-0x000000000086F000-memory.dmp

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memory/4968-152-0x0000000000400000-0x0000000000593000-memory.dmp

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