nymaim | 1dc465050f1c4437b6daa9d13e9532af13c3738bddbb8e6c7207eec7df599bcf

Analysis

max time kernel
99s
max time network
149s
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, 02:58

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General

Target
file.exe
Size 216KB
Sample220927-df63zsdecq
SHA256 1dc465050f1c4437b6daa9d13e9532af13c3738bddbb8e6c7207eec7df599bcf
MD5 5a0ddb90e0d761076aba5ff1d9cf78eb
SHA1 0c09f5b15aa7836d14a5561020a9a26575107e88
SHA512 1e1af5db5df9104780a8047bd85d24d0015a7a7689796d46061922829e8dc2f813d86f821bd683a7a4fb5859601dd8aa9381b1bc970036f41520e944e50a12a9
SSDEEP 3072:artkvzTI56ZHP5e36lJSeOAZWXKQAZk5DuGvhJLGxRv6jHAWcY2dTj/o06iyTL0/:aeRtRHlcAWit6hJSRvCHOYmj/rSL
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
208	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-1-5-21-2295526160-1155304984-640977766-1000\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
3928	1700	WerFault.exe	80
4644	1700	WerFault.exe	80
5076	1700	WerFault.exe	80
4928	1700	WerFault.exe	80
2780	1700	WerFault.exe	80
3784	1700	WerFault.exe	80
2036	1700	WerFault.exe	80
3988	1700	WerFault.exe	80
3400	1700	WerFault.exe	80
4868	1700	WerFault.exe	80
2232	1700	WerFault.exe	80
2068	1700	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3160	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1700	file.exe
1700	file.exe
1700	file.exe
1700	file.exe
1700	file.exe
1700	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1700	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	208	Cleaner.exe
Token: SeDebugPrivilege	3160	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1700 wrote to memory of 2088	1700	file.exe	100
PID 1700 wrote to memory of 2088	1700	file.exe	100
PID 1700 wrote to memory of 2088	1700	file.exe	100
PID 2088 wrote to memory of 208	2088	cmd.exe	102
PID 2088 wrote to memory of 208	2088	cmd.exe	102
PID 1700 wrote to memory of 3804	1700	file.exe	117
PID 1700 wrote to memory of 3804	1700	file.exe	117
PID 1700 wrote to memory of 3804	1700	file.exe	117
PID 3804 wrote to memory of 3160	3804	cmd.exe	121
PID 3804 wrote to memory of 3160	3804	cmd.exe	121
PID 3804 wrote to memory of 3160	3804	cmd.exe	121

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:1700
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 460
  2⤵
  - Program crash
  PID:3928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 764
  2⤵
  - Program crash
  PID:4644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 772
  2⤵
  - Program crash
  PID:5076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 772
  2⤵
  - Program crash
  PID:4928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 796
  2⤵
  - Program crash
  PID:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 928
  2⤵
  - Program crash
  PID:3784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 936
  2⤵
  - Program crash
  PID:2036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1032
  2⤵
  - Program crash
  PID:3988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1392
  2⤵
  - Program crash
  PID:3400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\f5Tr7q4dVPHyMpkGnjU2P\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2088
- - C:\Users\Admin\AppData\Local\Temp\f5Tr7q4dVPHyMpkGnjU2P\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\f5Tr7q4dVPHyMpkGnjU2P\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1404
  2⤵
  - Program crash
  PID:4868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1704
  2⤵
  - Program crash
  PID:2232
- 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:3804
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3160
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1700 -s 1676
  2⤵
  - Program crash
  PID:2068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 1700 -ip 1700
1⤵
PID:1732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1700 -ip 1700
1⤵
PID:3584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1700 -ip 1700
1⤵
PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1700 -ip 1700
1⤵
PID:5020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1700 -ip 1700
1⤵
PID:4904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1700 -ip 1700
1⤵
PID:1056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 1700 -ip 1700
1⤵
PID:408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 592 -p 1700 -ip 1700
1⤵
PID:4596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 1700 -ip 1700
1⤵
PID:3548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 1700 -ip 1700
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 1700 -ip 1700
1⤵
PID:4740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 1700 -ip 1700
1⤵
PID:1104

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\f5Tr7q4dVPHyMpkGnjU2P\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\f5Tr7q4dVPHyMpkGnjU2P\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\f5Tr7q4dVPHyMpkGnjU2P\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/208-144-0x0000021FA0A40000-0x0000021FA0A82000-memory.dmp

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memory/208-145-0x00007FFB3D400000-0x00007FFB3DEC1000-memory.dmp

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memory/208-147-0x00007FFB3D400000-0x00007FFB3DEC1000-memory.dmp

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memory/208-142-0x0000021F9ED00000-0x0000021F9EE82000-memory.dmp

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memory/1700-135-0x0000000000809000-0x000000000082F000-memory.dmp

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memory/1700-136-0x0000000000730000-0x000000000076F000-memory.dmp

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memory/1700-137-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/1700-146-0x0000000000400000-0x0000000000593000-memory.dmp

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memory/1700-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1700-154-0x0000000000400000-0x0000000000593000-memory.dmp

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