nymaim | f03631ef2f834bf26eefde590f30ecf8ef3a759c69306d2bf1b7fc3c92a6cfeb

Analysis

max time kernel
91s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
18/09/2022, 00:31

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General

Target
file.exe
Size 381KB
Sample220918-at2tmsaec3
SHA256 f03631ef2f834bf26eefde590f30ecf8ef3a759c69306d2bf1b7fc3c92a6cfeb
MD5 38e5498afc69b9ec1a07626e8c4f157e
SHA1 f89eff4a78157b1c225c5be63763c2b0c07be402
SHA512 b17c6af4bd47e6a545ef3e564a973b4a2f053f935d2827773e6319ec32f55dd3215e5e2a629ed94a54f5d43b8bfd2d8cd9b88bc5def0abfd345884f2282bb9ba
SSDEEP 6144:CNiLPzilGXHMI0SR9o/1UbH8BBGLNyFE98/3Gf8G08nigabwVf:CNirzilSMI0Td68fGLNye8/3GM8i
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-1-5-21-929662420-1054238289-2961194603-1000\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
1216	464	WerFault.exe	83
3116	464	WerFault.exe	83
2864	464	WerFault.exe	83
4224	464	WerFault.exe	83
2904	464	WerFault.exe	83
396	464	WerFault.exe	83
2088	464	WerFault.exe	83
4816	464	WerFault.exe	83
4824	464	WerFault.exe	83

Kills process with taskkill 1 IoCs

evasion

pid	Process
540	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	540	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 3248	464	file.exe	107
PID 464 wrote to memory of 3248	464	file.exe	107
PID 464 wrote to memory of 3248	464	file.exe	107
PID 3248 wrote to memory of 540	3248	cmd.exe	111
PID 3248 wrote to memory of 540	3248	cmd.exe	111
PID 3248 wrote to memory of 540	3248	cmd.exe	111

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:464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 460
  2⤵
  - Program crash
  PID:1216
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 768
  2⤵
  - Program crash
  PID:3116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 776
  2⤵
  - Program crash
  PID:2864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 792
  2⤵
  - Program crash
  PID:4224
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 844
  2⤵
  - Program crash
  PID:2904
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 776
  2⤵
  - Program crash
  PID:396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 808
  2⤵
  - Program crash
  PID:2088
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1356
  2⤵
  - Program crash
  PID:4816
- 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:3248
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:540
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 464 -s 1320
  2⤵
  - Program crash
  PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 464 -ip 464
1⤵
PID:3492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 464 -ip 464
1⤵
PID:4036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 464 -ip 464
1⤵
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 464 -ip 464
1⤵
PID:4860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 464 -ip 464
1⤵
PID:2808

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 464 -ip 464
1⤵
PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 464 -ip 464
1⤵
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 464 -ip 464
1⤵
PID:1172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 600 -p 464 -ip 464
1⤵
PID:4484

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/464-132-0x000000000056D000-0x0000000000594000-memory.dmp

Download

memory/464-133-0x00000000021C0000-0x0000000002202000-memory.dmp

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memory/464-134-0x0000000000400000-0x0000000000465000-memory.dmp

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memory/464-137-0x000000000056D000-0x0000000000594000-memory.dmp

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memory/464-138-0x0000000000400000-0x0000000000465000-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