nymaim | 854d8d8e815dda1dd77e3c1080f6a2ad529c8cef323d8bd4e773cef19b6a44ae

General

Target
file.exe
Size 390KB
Sample220917-c499wachgl
SHA256 854d8d8e815dda1dd77e3c1080f6a2ad529c8cef323d8bd4e773cef19b6a44ae
MD5 d35f49c0ed359bb544c1411ec498ccb1
SHA1 5cbe29d550812ebb4a681702abae2142e9b2d1f8
SHA512 9507395a5e05e4356ac6e69828fc7e935166f2b82b43e5c495d44b1a122583412b2c85f7a39c9701d3222c428dacb4e23fa96a70f7ae88bc106d21367c297768
SSDEEP 6144:01fXLXalPmL4jmQF4Foa3YzKlxURxPCALqYDo20tFhXJwnigabwVf:CPba0435uxUzPCAjwt3Jwi
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

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-1-5-21-2891029575-1462575-1165213807-1000\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 10 IoCs

pid	pid_target	Process	procid_target
1304	1856	WerFault.exe	79
4488	1856	WerFault.exe	79
1880	1856	WerFault.exe	79
488	1856	WerFault.exe	79
928	1856	WerFault.exe	79
4780	1856	WerFault.exe	79
3416	1856	WerFault.exe	79
636	1856	WerFault.exe	79
5048	1856	WerFault.exe	79
4064	1856	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
3468	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3468	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1856 wrote to memory of 2156	1856	file.exe	105
PID 1856 wrote to memory of 2156	1856	file.exe	105
PID 1856 wrote to memory of 2156	1856	file.exe	105
PID 2156 wrote to memory of 3468	2156	cmd.exe	109
PID 2156 wrote to memory of 3468	2156	cmd.exe	109
PID 2156 wrote to memory of 3468	2156	cmd.exe	109

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:1856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 456
  2⤵
  - Program crash
  PID:1304
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 464
  2⤵
  - Program crash
  PID:4488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 804
  2⤵
  - Program crash
  PID:1880
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 804
  2⤵
  - Program crash
  PID:488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 836
  2⤵
  - Program crash
  PID:928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 928
  2⤵
  - Program crash
  PID:4780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 936
  2⤵
  - Program crash
  PID:3416
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 1044
  2⤵
  - Program crash
  PID:636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 1044
  2⤵
  - Program crash
  PID:5048
- 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:2156
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1856 -s 520
  2⤵
  - Program crash
  PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1856 -ip 1856
1⤵
PID:3744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 1856 -ip 1856
1⤵
PID:224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1856 -ip 1856
1⤵
PID:2980

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1856 -ip 1856
1⤵
PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 1856 -ip 1856
1⤵
PID:440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 1856 -ip 1856
1⤵
PID:388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1856 -ip 1856
1⤵
PID:5100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1856 -ip 1856
1⤵
PID:2136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1856 -ip 1856
1⤵
PID:4432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 1856 -ip 1856
1⤵
PID:2832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1856-132-0x00000000005C9000-0x00000000005F0000-memory.dmp

Download

memory/1856-133-0x00000000021A0000-0x00000000021E2000-memory.dmp

Download

memory/1856-134-0x0000000000400000-0x0000000000467000-memory.dmp

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memory/1856-137-0x00000000005C9000-0x00000000005F0000-memory.dmp

Download

memory/1856-138-0x00000000021A0000-0x00000000021E2000-memory.dmp

Download

memory/1856-139-0x0000000000400000-0x0000000000467000-memory.dmp

Download

memory/1856-140-0x00000000005C9000-0x00000000005F0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads