nymaim | 4f0a99d88ea59bdde7193bf07b72a12dee3d65424ae878b0cea52e656c666b4b

Analysis

max time kernel
90s
max time network
153s
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, 01:07

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General

Target
file.exe
Size 371KB
Sample220916-bgmpmaedc4
SHA256 4f0a99d88ea59bdde7193bf07b72a12dee3d65424ae878b0cea52e656c666b4b
MD5 fd0acfd70579998d20c331f81fd98b58
SHA1 2748d19da4f4a3f335fedee054e021fe803465c1
SHA512 bc6fd704605a7b12d14a88f7e7a6120af476b72d742ce8eda7d490bbd611b1f2a08fb031179e0fc080c478c038333266b920ea1bf1f6cd70e70dc0163c446f5b
SSDEEP 6144:f11fFNYSANGwt9cps6i5kJm/K9bdL/2PelpfJZILUySJpnuuD4OFk:fzFNfANGwtR6i5k0/or2Ped6LUySnnfG
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
384	1212	WerFault.exe	78
5116	1212	WerFault.exe	78
4908	1212	WerFault.exe	78
1140	1212	WerFault.exe	78
1748	1212	WerFault.exe	78
392	1212	WerFault.exe	78
2156	1212	WerFault.exe	78
724	1212	WerFault.exe	78
3488	1212	WerFault.exe	78

Kills process with taskkill 1 IoCs

evasion

pid	Process
3400	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3400	taskkill.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 4636	1212	file.exe	99
PID 1212 wrote to memory of 4636	1212	file.exe	99
PID 1212 wrote to memory of 4636	1212	file.exe	99
PID 4636 wrote to memory of 3400	4636	cmd.exe	103
PID 4636 wrote to memory of 3400	4636	cmd.exe	103
PID 4636 wrote to memory of 3400	4636	cmd.exe	103

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:1212
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 448
  2⤵
  - Program crash
  PID:384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 756
  2⤵
  - Program crash
  PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 804
  2⤵
  - Program crash
  PID:4908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 756
  2⤵
  - Program crash
  PID:1140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 840
  2⤵
  - Program crash
  PID:1748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 940
  2⤵
  - Program crash
  PID:392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 1004
  2⤵
  - Program crash
  PID:2156
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 1360
  2⤵
  - Program crash
  PID:724
- 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:4636
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1212 -s 492
  2⤵
  - Program crash
  PID:3488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1212 -ip 1212
1⤵
PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1212 -ip 1212
1⤵
PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1212 -ip 1212
1⤵
PID:4816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 1212 -ip 1212
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1212 -ip 1212
1⤵
PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 604 -p 1212 -ip 1212
1⤵
PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 1212 -ip 1212
1⤵
PID:3452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 616 -p 1212 -ip 1212
1⤵
PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 652 -p 1212 -ip 1212
1⤵
PID:4984

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/1212-132-0x0000000000619000-0x0000000000640000-memory.dmp

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memory/1212-133-0x00000000022F0000-0x0000000002333000-memory.dmp

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memory/1212-134-0x0000000000400000-0x00000000005B9000-memory.dmp

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memory/1212-137-0x0000000000619000-0x0000000000640000-memory.dmp

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memory/1212-138-0x0000000000400000-0x00000000005B9000-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