nymaim | 98b43c36052580aff0d7bacae12ca45b01d5cf101629706120e86c9ef393c393

General

Target

file.exe
Size

216KB
MD5

2b5cab78ddef9a073f3e67d6c232a3c0
SHA1

05c883937fb2d3f590290c19e67650d7eb8f2fe9
SHA256

98b43c36052580aff0d7bacae12ca45b01d5cf101629706120e86c9ef393c393
SHA512

7ed1762f4dbf74a20f8a7fb68026da78297137ea4104f7998490d712b8ac15e8015a985faf7f64b50ca4d3ea6162496a7338268c23551b6fdd9b11c9a91141be
SSDEEP

3072:xOQCTI5akzl06dzMUjC42+XVhl6iZb8CtyF45Pub5X+k39ZJhWJxQHmSJYoMkc78:xM8tdqi4tCtXAXh9MQHBPcp

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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4000	Cleaner.exe

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
5004	5048	WerFault.exe	80
4740	5048	WerFault.exe	80
3396	5048	WerFault.exe	80
4992	5048	WerFault.exe	80
4796	5048	WerFault.exe	80
1988	5048	WerFault.exe	80
3360	5048	WerFault.exe	80
1944	5048	WerFault.exe	80
3412	5048	WerFault.exe	80
4284	5048	WerFault.exe	80
4544	5048	WerFault.exe	80

Kills process with taskkill 1 IoCs

evasion

pid	Process
4736	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5048	file.exe
5048	file.exe
5048	file.exe
5048	file.exe
5048	file.exe
5048	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
5048	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4000	Cleaner.exe
Token: SeDebugPrivilege	4736	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 4292	5048	file.exe	98
PID 5048 wrote to memory of 4292	5048	file.exe	98
PID 5048 wrote to memory of 4292	5048	file.exe	98
PID 4292 wrote to memory of 4000	4292	cmd.exe	100
PID 4292 wrote to memory of 4000	4292	cmd.exe	100
PID 5048 wrote to memory of 3524	5048	file.exe	116
PID 5048 wrote to memory of 3524	5048	file.exe	116
PID 5048 wrote to memory of 3524	5048	file.exe	116
PID 3524 wrote to memory of 4736	3524	cmd.exe	119
PID 3524 wrote to memory of 4736	3524	cmd.exe	119
PID 3524 wrote to memory of 4736	3524	cmd.exe	119

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 456
  2⤵
  - Program crash
  PID:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 764
  2⤵
  - Program crash
  PID:4740
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 772
  2⤵
  - Program crash
  PID:3396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 804
  2⤵
  - Program crash
  PID:4992
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 812
  2⤵
  - Program crash
  PID:4796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 836
  2⤵
  - Program crash
  PID:1988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 840
  2⤵
  - Program crash
  PID:3360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1380
  2⤵
  - Program crash
  PID:1944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4292
- - C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1396
  2⤵
  - Program crash
  PID:3412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 1656
  2⤵
  - Program crash
  PID:4284
- 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:3524
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5048 -s 516
  2⤵
  - Program crash
  PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 5048 -ip 5048
1⤵
PID:2432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5048 -ip 5048
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 5048 -ip 5048
1⤵
PID:4676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 5048 -ip 5048
1⤵
PID:4896

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 5048 -ip 5048
1⤵
PID:3256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 5048 -ip 5048
1⤵
PID:4536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 5048 -ip 5048
1⤵
PID:4592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 5048 -ip 5048
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 5048 -ip 5048
1⤵
PID:3932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 5048 -ip 5048
1⤵
PID:4632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 588 -p 5048 -ip 5048
1⤵
PID:4684

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

1

T1102

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Bunifu_UI_v1.5.3.dll

Filesize
236KB

MD5
2ecb51ab00c5f340380ecf849291dbcf

SHA1
1a4dffbce2a4ce65495ed79eab42a4da3b660931

SHA256
f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf

SHA512
e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
C:\Users\Admin\AppData\Local\Temp\puFYZMMGQM\Cleaner.exe

Filesize
4.2MB

MD5
e89589df13ac2783f322449f63547468

SHA1
bd938f596e09e2ed04c3bc0f0ac68de71e04bcf6

SHA256
663a353b45ed8f3acd4abc429f519635c1cf1294e3b9af98ffe6b1d4937c0e8f

SHA512
9e0126975b32d022b6fe89d4681981e57ef1a3c6375ee2df131ce3527a3ad91c795d75302b78c8fc59651e9e20cebfd177b3278a87f45f8174f9e4ec09fc9cc6

Download Submit
memory/4000-144-0x00007FFA66DA0000-0x00007FFA67861000-memory.dmp

Filesize
10.8MB

Download
memory/4000-139-0x0000028C07BA0000-0x0000028C07D22000-memory.dmp

Filesize
1.5MB

Download
memory/4000-141-0x0000028C09AC0000-0x0000028C09B02000-memory.dmp

Filesize
264KB

Download
memory/4000-146-0x00007FFA66DA0000-0x00007FFA67861000-memory.dmp

Filesize
10.8MB

Download
memory/5048-134-0x0000000000400000-0x0000000000593000-memory.dmp

Filesize
1.6MB

Download
memory/5048-143-0x0000000000730000-0x000000000076F000-memory.dmp

Filesize
252KB

Download
memory/5048-145-0x0000000000400000-0x0000000000593000-memory.dmp

Filesize
1.6MB

Download
memory/5048-142-0x0000000000799000-0x00000000007BF000-memory.dmp

Filesize
152KB

Download
memory/5048-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/5048-133-0x0000000000730000-0x000000000076F000-memory.dmp

Filesize
252KB

Download
memory/5048-132-0x0000000000799000-0x00000000007BF000-memory.dmp

Filesize
152KB

Download
memory/5048-153-0x0000000000400000-0x0000000000593000-memory.dmp

Filesize
1.6MB

Download

Analysis

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