nymaim | 3c2d75bb161819f1eb3a289d45e1efafff664df94e23e12cc1d5fde2135ae75c

General

Target

9e5791184f17947a8c5de18f0b531621.exe
Size

330KB
MD5

9e5791184f17947a8c5de18f0b531621
SHA1

7ea57de458298e629ee3ece0e835a482a328623e
SHA256

3c2d75bb161819f1eb3a289d45e1efafff664df94e23e12cc1d5fde2135ae75c
SHA512

8bea91539bb0169d538bb4898c4b2eadc815af960f8f7a67143fa153f3a29ace0b68c44ba62ec84d9cccca7221ba0c9e4d7bb56af01d28ce8e5e45221b8cc8a0
SSDEEP

6144:k9qZLYKY3lTIraQxpFevGrS5/dDQTbNV4b7i:k9qZUKQFIrTxpFgGrS/dkTbv4bu

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	9e5791184f17947a8c5de18f0b531621.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
3544	4628	WerFault.exe	79
372	4628	WerFault.exe	79
1768	4628	WerFault.exe	79
4400	4628	WerFault.exe	79
3068	4628	WerFault.exe	79
260	4628	WerFault.exe	79
4804	4628	WerFault.exe	79
1840	4628	WerFault.exe	79
3768	4628	WerFault.exe	79
3088	4628	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
4036	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4036	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4628 wrote to memory of 4616	4628	9e5791184f17947a8c5de18f0b531621.exe	100
PID 4628 wrote to memory of 4616	4628	9e5791184f17947a8c5de18f0b531621.exe	100
PID 4628 wrote to memory of 4616	4628	9e5791184f17947a8c5de18f0b531621.exe	100
PID 4616 wrote to memory of 4036	4616	cmd.exe	104
PID 4616 wrote to memory of 4036	4616	cmd.exe	104
PID 4616 wrote to memory of 4036	4616	cmd.exe	104

C:\Users\Admin\AppData\Local\Temp\9e5791184f17947a8c5de18f0b531621.exe
"C:\Users\Admin\AppData\Local\Temp\9e5791184f17947a8c5de18f0b531621.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 456
  2⤵
  - Program crash
  PID:3544
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 764
  2⤵
  - Program crash
  PID:372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 784
  2⤵
  - Program crash
  PID:1768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 784
  2⤵
  - Program crash
  PID:4400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 856
  2⤵
  - Program crash
  PID:3068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 876
  2⤵
  - Program crash
  PID:260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 836
  2⤵
  - Program crash
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1084
  2⤵
  - Program crash
  PID:1840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 1360
  2⤵
  - Program crash
  PID:3768
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "9e5791184f17947a8c5de18f0b531621.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\9e5791184f17947a8c5de18f0b531621.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4616
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "9e5791184f17947a8c5de18f0b531621.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4036
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4628 -s 512
  2⤵
  - Program crash
  PID:3088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4628 -ip 4628
1⤵
PID:456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 4628 -ip 4628
1⤵
PID:652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4628 -ip 4628
1⤵
PID:1836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 4628 -ip 4628
1⤵
PID:856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4628 -ip 4628
1⤵
PID:1704

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4628 -ip 4628
1⤵
PID:4264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4628 -ip 4628
1⤵
PID:3948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4628 -ip 4628
1⤵
PID:5052

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 4628 -ip 4628
1⤵
PID:4456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 4628 -ip 4628
1⤵
PID:996

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

Replay Monitor

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Downloads

memory/4628-132-0x00000000007FE000-0x0000000000825000-memory.dmp

Filesize
156KB

Download
memory/4628-133-0x00000000021C0000-0x0000000002200000-memory.dmp

Filesize
256KB

Download
memory/4628-134-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4628-137-0x00000000007FE000-0x0000000000825000-memory.dmp

Filesize
156KB

Download
memory/4628-138-0x00000000021C0000-0x0000000002200000-memory.dmp

Filesize
256KB

Download
memory/4628-139-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download

Analysis

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