nymaim | d3ba77deb12b2efd2fdc93eb6dd789727f49f4a3fac3cbb74d22fa1142413de2

Analysis

max time kernel
102s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
26/09/2022, 17:13

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General

Target
file.exe
Size 216KB
Sample220926-vreljsbdf2
SHA256 d3ba77deb12b2efd2fdc93eb6dd789727f49f4a3fac3cbb74d22fa1142413de2
MD5 28662d90901f77ef1f7563d06527dc37
SHA1 117347353515109e8dbe5e5cba0ffa46868be388
SHA512 fdea9b2f95f5b727f4b5f56e8680955b07335a4ddff0937221f2626c7540594896fd0022325769c7dae5f0b181af07b63bed52fb5c09cc26d478efed404b8adc
SSDEEP 3072:yH7OKAxTc5iirR3rsjIy5hwldTDooUjX/uxYYGhGhJNSVhtGNhc9Zht+5B:IFFAcybwlJUoUjX/UIhk+ht6c9Zh
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
3432	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-1-5-21-929662420-1054238289-2961194603-1000\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
3740	4796	WerFault.exe	83
4748	4796	WerFault.exe	83
4812	4796	WerFault.exe	83
3500	4796	WerFault.exe	83
4608	4796	WerFault.exe	83
4860	4796	WerFault.exe	83
2452	4796	WerFault.exe	83
940	4796	WerFault.exe	83
1576	4796	WerFault.exe	83
4040	4796	WerFault.exe	83
324	4796	WerFault.exe	83

Kills process with taskkill 1 IoCs

evasion

pid	Process
940	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4796	file.exe
4796	file.exe
4796	file.exe
4796	file.exe
4796	file.exe
4796	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4796	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3432	Cleaner.exe
Token: SeDebugPrivilege	940	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 3120	4796	file.exe	107
PID 4796 wrote to memory of 3120	4796	file.exe	107
PID 4796 wrote to memory of 3120	4796	file.exe	107
PID 3120 wrote to memory of 3432	3120	cmd.exe	109
PID 3120 wrote to memory of 3432	3120	cmd.exe	109
PID 4796 wrote to memory of 1396	4796	file.exe	125
PID 4796 wrote to memory of 1396	4796	file.exe	125
PID 4796 wrote to memory of 1396	4796	file.exe	125
PID 1396 wrote to memory of 940	1396	cmd.exe	129
PID 1396 wrote to memory of 940	1396	cmd.exe	129
PID 1396 wrote to memory of 940	1396	cmd.exe	129

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:4796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 452
  2⤵
  - Program crash
  PID:3740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 772
  2⤵
  - Program crash
  PID:4748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 760
  2⤵
  - Program crash
  PID:4812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 760
  2⤵
  - Program crash
  PID:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 800
  2⤵
  - Program crash
  PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 928
  2⤵
  - Program crash
  PID:4860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 932
  2⤵
  - Program crash
  PID:2452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 1376
  2⤵
  - Program crash
  PID:940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\r6kta3J58ci2pXa5brGuhtJd0\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3120
- - C:\Users\Admin\AppData\Local\Temp\r6kta3J58ci2pXa5brGuhtJd0\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\r6kta3J58ci2pXa5brGuhtJd0\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3432
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 1636
  2⤵
  - Program crash
  PID:1576
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 1412
  2⤵
  - Program crash
  PID:4040
- 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:1396
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 492
  2⤵
  - Program crash
  PID:324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4796 -ip 4796
1⤵
PID:4676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4796 -ip 4796
1⤵
PID:2384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4796 -ip 4796
1⤵
PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4796 -ip 4796
1⤵
PID:4788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4796 -ip 4796
1⤵
PID:4040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4796 -ip 4796
1⤵
PID:3324

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4796 -ip 4796
1⤵
PID:3728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 4796 -ip 4796
1⤵
PID:5080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4796 -ip 4796
1⤵
PID:1564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4796 -ip 4796
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4796 -ip 4796
1⤵
PID:4044

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\r6kta3J58ci2pXa5brGuhtJd0\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\r6kta3J58ci2pXa5brGuhtJd0\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\r6kta3J58ci2pXa5brGuhtJd0\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/3432-144-0x00007FF8600C0000-0x00007FF860B81000-memory.dmp

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memory/3432-139-0x0000023E34420000-0x0000023E345A2000-memory.dmp

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memory/3432-143-0x0000023E349A0000-0x0000023E349E2000-memory.dmp

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memory/3432-145-0x00007FF8600C0000-0x00007FF860B81000-memory.dmp

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memory/4796-140-0x0000000000669000-0x000000000068F000-memory.dmp

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memory/4796-141-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/4796-132-0x0000000000669000-0x000000000068F000-memory.dmp

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memory/4796-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/4796-134-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/4796-133-0x0000000002300000-0x000000000233F000-memory.dmp

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memory/4796-152-0x0000000000400000-0x0000000000593000-memory.dmp

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