nymaim | ff7942d7c23d47e9925f87cfa6b372b8f444eae95a0d40372a0b2e6ce374f4f2

Analysis

max time kernel
132s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 02:44

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General

Target
file.exe
Size 220KB
Sample221003-c76e4acgd5
SHA256 ff7942d7c23d47e9925f87cfa6b372b8f444eae95a0d40372a0b2e6ce374f4f2
MD5 f5944917897881a5b9d957a16e54d8ff
SHA1 23147802f1d1c7aef06b6409dfc74dc364a7ee8b
SHA512 994c03bb5f739f1af81bb3cac3af3a87c346c67a8022f29be191e126d5b4d39df313813ca251ba7a50370e62c8f3fc1126033dfa9a109a1e3c90a127c9ddf98c
SSDEEP 3072:WgJuaOR+ZsZkh1PIggk6OR6M0rWRpgnikyBpsIFAaDx70t6/AojuY3sm0P+f:AcGkXIfk6OR6M0ridk8S870t6EYcm
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
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4688	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	file.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000400000000a3be-140.dat	autoit_exe
behavioral2/files/0x000400000000a3be-141.dat	autoit_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
1848	2344	WerFault.exe	20
4400	2344	WerFault.exe	20
3840	2344	WerFault.exe	20
260	2344	WerFault.exe	20
2332	2344	WerFault.exe	20
3276	2344	WerFault.exe	20
4920	2344	WerFault.exe	20
3392	2344	WerFault.exe	20
1724	2344	WerFault.exe	20
4128	4688	WerFault.exe	109

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2344	file.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2972	2344	file.exe	107
PID 2344 wrote to memory of 2972	2344	file.exe	107
PID 2344 wrote to memory of 2972	2344	file.exe	107
PID 2972 wrote to memory of 4688	2972	cmd.exe	109
PID 2972 wrote to memory of 4688	2972	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 behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 456
  2⤵
  - Program crash
  PID:1848
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 776
  2⤵
  - Program crash
  PID:4400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 780
  2⤵
  - Program crash
  PID:3840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 800
  2⤵
  - Program crash
  PID:260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 820
  2⤵
  - Program crash
  PID:2332
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 928
  2⤵
  - Program crash
  PID:3276
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 1004
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 1148
  2⤵
  - Program crash
  PID:3392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 1308
  2⤵
  - Program crash
  PID:1724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\KiKHOaDiacHqX\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Users\Admin\AppData\Local\Temp\KiKHOaDiacHqX\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\KiKHOaDiacHqX\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    PID:4688
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 4688 -s 976
      4⤵
      Program crash
      PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2344 -ip 2344
1⤵
PID:1688

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2344 -ip 2344
1⤵
PID:956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 2344 -ip 2344
1⤵
PID:864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 504 -p 2344 -ip 2344
1⤵
PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 2344 -ip 2344
1⤵
PID:2620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2344 -ip 2344
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2344 -ip 2344
1⤵
PID:1840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2344 -ip 2344
1⤵
PID:3768

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2344 -ip 2344
1⤵
PID:4484

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 588 -p 4688 -ip 4688
1⤵
PID:4800

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

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\KiKHOaDiacHqX\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\KiKHOaDiacHqX\Cleaner.exe
Size 3.8MB
SHA256 c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568
MD5 04514bd4962f7d60679434e0ebe49184
SHA1 1493a5447eb8156a7d7aecff60ee8bfba2209526
SHA512 a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e
SSDEEP 49152:+/PD/DL/D9CuZrr2h60qPPB+lJJkF9IC966eB+lJJkF9IC966eB+lJJkF9IC966h:+3D///UUrP43m8C/3m8C/3m8C5
MD5 SHA1 SHA512 SSDEEP

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memory/2344-135-0x00000000006DD000-0x0000000000703000-memory.dmp

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memory/2344-132-0x00000000006DD000-0x0000000000703000-memory.dmp

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memory/2344-136-0x0000000002310000-0x000000000234F000-memory.dmp

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memory/2344-137-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/2344-134-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/2344-133-0x0000000002310000-0x000000000234F000-memory.dmp

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memory/4688-142-0x000001F76C080000-0x000001F76C1D6000-memory.dmp

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memory/4688-143-0x00007FFC91350000-0x00007FFC91E11000-memory.dmp

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memory/4688-144-0x00007FFC91350000-0x00007FFC91E11000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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