nymaim | 4b062d15bcbd2932d4e715ca12b079b1dd49e35ec6d2441c2cccd6746539a73a

General

Target
24c7ab676d048952880a3db374b1879b.exe
Size 340KB
Sample221230-srw5gsbb2t
SHA256 4b062d15bcbd2932d4e715ca12b079b1dd49e35ec6d2441c2cccd6746539a73a
MD5 24c7ab676d048952880a3db374b1879b
SHA1 88c24759b89e1bebfddf53b1fd40c1abd512c69f
SHA512 544c98386817ea132e75bfcaaec92a968273b34c45100d33bc975bbf6f52ca9d124d24aefb3d6f6ac27b4249053879e3a96a2ca47c05ae0a0ca25c5729adfcd6
SSDEEP 6144:PDIMLmKStEF8sbwT+Ak21NMThsbDUXo5o+YXx3E5:PDIMVqm52PMTib0B
MD5 SHA1 SHA512 SSDEEP

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	24c7ab676d048952880a3db374b1879b.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
2532	4248	WerFault.exe	79
2572	4248	WerFault.exe	79
4572	4248	WerFault.exe	79
4912	4248	WerFault.exe	79
3844	4248	WerFault.exe	79
212	4248	WerFault.exe	79
1620	4248	WerFault.exe	79
5004	4248	WerFault.exe	79
2644	4248	WerFault.exe	79
2360	4248	WerFault.exe	79

Kills process with taskkill 1 IoCs

evasion

pid	Process
3928	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3928	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 3412	4248	24c7ab676d048952880a3db374b1879b.exe	102
PID 4248 wrote to memory of 3412	4248	24c7ab676d048952880a3db374b1879b.exe	102
PID 4248 wrote to memory of 3412	4248	24c7ab676d048952880a3db374b1879b.exe	102
PID 3412 wrote to memory of 3928	3412	cmd.exe	106
PID 3412 wrote to memory of 3928	3412	cmd.exe	106
PID 3412 wrote to memory of 3928	3412	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\24c7ab676d048952880a3db374b1879b.exe
"C:\Users\Admin\AppData\Local\Temp\24c7ab676d048952880a3db374b1879b.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 452
  2⤵
  - Program crash
  PID:2532
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 764
  2⤵
  - Program crash
  PID:2572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 804
  2⤵
  - Program crash
  PID:4572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 804
  2⤵
  - Program crash
  PID:4912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 780
  2⤵
  - Program crash
  PID:3844
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 820
  2⤵
  - Program crash
  PID:212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 1008
  2⤵
  - Program crash
  PID:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 1040
  2⤵
  - Program crash
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 1332
  2⤵
  - Program crash
  PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "24c7ab676d048952880a3db374b1879b.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\24c7ab676d048952880a3db374b1879b.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3412
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "24c7ab676d048952880a3db374b1879b.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3928
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4248 -s 492
  2⤵
  - Program crash
  PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4248 -ip 4248
1⤵
PID:4680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 4248 -ip 4248
1⤵
PID:4356

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4248 -ip 4248
1⤵
PID:4064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4248 -ip 4248
1⤵
PID:4656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4248 -ip 4248
1⤵
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4248 -ip 4248
1⤵
PID:3972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4248 -ip 4248
1⤵
PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 4248 -ip 4248
1⤵
PID:2520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4248 -ip 4248
1⤵
PID:3424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 4248 -ip 4248
1⤵
PID:2420

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/4248-132-0x0000000000778000-0x000000000079F000-memory.dmp

Download

memory/4248-133-0x00000000006F0000-0x0000000000730000-memory.dmp

Download

memory/4248-134-0x0000000000400000-0x0000000000472000-memory.dmp

Download

memory/4248-137-0x0000000000778000-0x000000000079F000-memory.dmp

Download

memory/4248-138-0x0000000000400000-0x0000000000472000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads