nymaim | 609e593e52b4d889ce2aac6834f06ce62e82649b1a49d5e1c1a9cda11d1f5e80

Analysis

max time kernel
103s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2022, 02:36

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General

Target
file.exe
Size 284KB
Sample220925-c3kmtschc5
SHA256 609e593e52b4d889ce2aac6834f06ce62e82649b1a49d5e1c1a9cda11d1f5e80
MD5 5391b4af9517ae14559622fd6e290e8b
SHA1 c1e6b45da475cb365eca384eefa25313c3b03f1e
SHA512 e3ee994dc59b5222c4b024ac0837b17b1f5d9e21e55d0dd5cc7eabd1ed909156440a21363260fa13fc6c7894f6f4e23957e12b491ef904bf842407b07d743d6e
SSDEEP 6144:GLaLHUStoPnhilzmlP1cUvxSKLu0kS0E:GuLzwnclzmlP+ZCz0
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
1512	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
3040	5096	WerFault.exe	78
3456	5096	WerFault.exe	78
1644	5096	WerFault.exe	78
2140	5096	WerFault.exe	78
4992	5096	WerFault.exe	78
4284	5096	WerFault.exe	78
2664	5096	WerFault.exe	78
1464	5096	WerFault.exe	78
4516	5096	WerFault.exe	78
1268	5096	WerFault.exe	78
2304	5096	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
4872	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5096	file.exe
5096	file.exe
5096	file.exe
5096	file.exe
5096	file.exe
5096	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5096	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1512	Cleaner.exe
Token: SeDebugPrivilege	4872	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5096 wrote to memory of 4464	5096	file.exe	102
PID 5096 wrote to memory of 4464	5096	file.exe	102
PID 5096 wrote to memory of 4464	5096	file.exe	102
PID 4464 wrote to memory of 1512	4464	cmd.exe	104
PID 4464 wrote to memory of 1512	4464	cmd.exe	104
PID 5096 wrote to memory of 1684	5096	file.exe	113
PID 5096 wrote to memory of 1684	5096	file.exe	113
PID 5096 wrote to memory of 1684	5096	file.exe	113
PID 1684 wrote to memory of 4872	1684	cmd.exe	116
PID 1684 wrote to memory of 4872	1684	cmd.exe	116
PID 1684 wrote to memory of 4872	1684	cmd.exe	116

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:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 452
  2⤵
  - Program crash
  PID:3040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 772
  2⤵
  - Program crash
  PID:3456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 808
  2⤵
  - Program crash
  PID:1644
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 764
  2⤵
  - Program crash
  PID:2140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 856
  2⤵
  - Program crash
  PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 928
  2⤵
  - Program crash
  PID:4284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 928
  2⤵
  - Program crash
  PID:2664
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1408
  2⤵
  - Program crash
  PID:1464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\302fArheAW1aphcMk8UD1N5y3\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4464
- - C:\Users\Admin\AppData\Local\Temp\302fArheAW1aphcMk8UD1N5y3\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\302fArheAW1aphcMk8UD1N5y3\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1256
  2⤵
  - Program crash
  PID:4516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 1752
  2⤵
  - Program crash
  PID:1268
- 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:1684
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4872
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5096 -s 492
  2⤵
  - Program crash
  PID:2304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5096 -ip 5096
1⤵
PID:1296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 5096 -ip 5096
1⤵
PID:4904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 5096 -ip 5096
1⤵
PID:2032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 5096 -ip 5096
1⤵
PID:1732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 5096 -ip 5096
1⤵
PID:556

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 5096 -ip 5096
1⤵
PID:1780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 596 -p 5096 -ip 5096
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5096 -ip 5096
1⤵
PID:4776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 644 -p 5096 -ip 5096
1⤵
PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 624 -p 5096 -ip 5096
1⤵
PID:3100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5096 -ip 5096
1⤵
PID:5092

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

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\302fArheAW1aphcMk8UD1N5y3\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\302fArheAW1aphcMk8UD1N5y3\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\302fArheAW1aphcMk8UD1N5y3\Cleaner.exe
Size 3.8MB
SHA256 301d9c55653f6cd8211aafdaf130092cb7ef8ea2e54db2db97153c1c8abf272c
MD5 23c1e8f48ec06960bbd9969c1f404192
SHA1 b9384151eb3f2dbd095fa273c248722e1cc74ea3
SHA512 f572e3a0ad58b3a1ed22db00b05a3909f7f53f70b84ab736e2dd6ddc54d8781fcffe4a9b33b0dd2836d438a1982b944426fe4ed01bd866bd77e20046220f2b5b
SSDEEP 49152:W/PD/DL/D9CuZrr2h60qPAnDfvl/DK1zAb2ibtbelHi2btsTBrfwWXRxL56ZD0Mp:W3D///UUrPmfvVDWASmXnMn
MD5 SHA1 SHA512 SSDEEP

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memory/1512-145-0x000001E76B880000-0x000001E76B8C2000-memory.dmp

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memory/1512-143-0x000001E751280000-0x000001E751400000-memory.dmp

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memory/1512-147-0x00007FFF3C240000-0x00007FFF3CD01000-memory.dmp

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memory/1512-146-0x00007FFF3C240000-0x00007FFF3CD01000-memory.dmp

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memory/5096-136-0x0000000000610000-0x0000000000710000-memory.dmp

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memory/5096-135-0x0000000000400000-0x00000000005A1000-memory.dmp

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memory/5096-137-0x00000000022E0000-0x000000000231F000-memory.dmp

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memory/5096-134-0x00000000022E0000-0x000000000231F000-memory.dmp

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memory/5096-133-0x0000000000610000-0x0000000000710000-memory.dmp

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memory/5096-139-0x0000000000400000-0x00000000005A1000-memory.dmp

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memory/5096-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/5096-154-0x0000000000400000-0x00000000005A1000-memory.dmp

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