nymaim | e86e83c20b0c276e2bc512f3e44b63eb58660b726ac5dc4b6f67bc8e5fc61e1a

Analysis

max time kernel
96s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
16/09/2022, 22:45

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General

Target
file.exe
Size 390KB
Sample220916-2pdd2acfem
SHA256 e86e83c20b0c276e2bc512f3e44b63eb58660b726ac5dc4b6f67bc8e5fc61e1a
MD5 06bca0153779c79508ce5fbbc93c4b22
SHA1 18723b9458cb5cda2303e74923367a6433639d9b
SHA512 51b3c1d7465f71159c3e38a14c31e6a1b1222b01ee90e12ddf26d3af98f81f8caa876d1f70d72167affb0e13eb694bed4fda7aa3928985860fa01a830d126f71
SSDEEP 6144:ooeRLqO5LYItIGAN9AOnqMeskFb8ISQtuJpNnt05GdnigabwVf:DYTLNl+AOnqxid2yi
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

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 9 IoCs

pid	pid_target	Process	procid_target
4252	4952	WerFault.exe	80
1116	4952	WerFault.exe	80
1916	4952	WerFault.exe	80
3196	4952	WerFault.exe	80
260	4952	WerFault.exe	80
4524	4952	WerFault.exe	80
3756	4952	WerFault.exe	80
4304	4952	WerFault.exe	80
4604	4952	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
3920	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3920	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 4024	4952	file.exe	104
PID 4952 wrote to memory of 4024	4952	file.exe	104
PID 4952 wrote to memory of 4024	4952	file.exe	104
PID 4024 wrote to memory of 3920	4024	cmd.exe	107
PID 4024 wrote to memory of 3920	4024	cmd.exe	107
PID 4024 wrote to memory of 3920	4024	cmd.exe	107

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 452
  2⤵
  - Program crash
  PID:4252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 756
  2⤵
  - Program crash
  PID:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 772
  2⤵
  - Program crash
  PID:1916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 772
  2⤵
  - Program crash
  PID:3196
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 796
  2⤵
  - Program crash
  PID:260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 872
  2⤵
  - Program crash
  PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 932
  2⤵
  - Program crash
  PID:3756
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 1356
  2⤵
  - Program crash
  PID:4304
- 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:4024
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4952 -s 1336
  2⤵
  - Program crash
  PID:4604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4952 -ip 4952
1⤵
PID:4936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4952 -ip 4952
1⤵
PID:4220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 4952 -ip 4952
1⤵
PID:4532

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4952 -ip 4952
1⤵
PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4952 -ip 4952
1⤵
PID:884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4952 -ip 4952
1⤵
PID:4728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4952 -ip 4952
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4952 -ip 4952
1⤵
PID:4636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4952 -ip 4952
1⤵
PID:984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4952-132-0x0000000000499000-0x00000000004C0000-memory.dmp

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memory/4952-133-0x00000000021A0000-0x00000000021E2000-memory.dmp

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memory/4952-134-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/4952-137-0x0000000000499000-0x00000000004C0000-memory.dmp

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memory/4952-138-0x00000000021A0000-0x00000000021E2000-memory.dmp

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memory/4952-139-0x0000000000400000-0x0000000000467000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads