nymaim | d2deaae72a5f7ef69dd3e8b0cc2d3cff7cd2b75cc5010a7c48712cc2ee1ed328

Analysis

max time kernel
108s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
03/10/2022, 07:00

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General

Target
file.exe
Size 221KB
Sample221003-hsnjmacda7
SHA256 d2deaae72a5f7ef69dd3e8b0cc2d3cff7cd2b75cc5010a7c48712cc2ee1ed328
MD5 811fa27a6e376b8f79abf5a483fa626a
SHA1 0bc1893901f7d815c99f84b6d6026fc902f2926a
SHA512 48591d673ac0a2c6825fdabd472dc6ff559e3dacd8f61c20d54b84a963550b4f3e0d96cc8793249fe605f09aed088eca5301ea5ad8a184e30db3a21fb829dfb4
SSDEEP 3072:jhZmqORjkaK7C/aQThJ/HXjAxsM590j/sPJ6ZQu/CmDEwPg:jWP/aQNlTw159wFc
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
736	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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	file.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x001600000001e785-139.dat	autoit_exe
behavioral2/files/0x001600000001e785-140.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 13 IoCs

pid	pid_target	Process	procid_target
4972	2060	WerFault.exe	82
4320	2060	WerFault.exe	82
1308	2060	WerFault.exe	82
5060	2060	WerFault.exe	82
2816	2060	WerFault.exe	82
4640	2060	WerFault.exe	82
4920	2060	WerFault.exe	82
3132	2060	WerFault.exe	82
3116	2060	WerFault.exe	82
240	736	WerFault.exe	110
4972	2060	WerFault.exe	82
3160	2060	WerFault.exe	82
2380	2060	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
1688	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2060	file.exe
2060	file.exe
2060	file.exe
2060	file.exe
2060	file.exe
2060	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2060	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	736	Cleaner.exe
Token: SeDebugPrivilege	1688	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 2316	2060	file.exe	108
PID 2060 wrote to memory of 2316	2060	file.exe	108
PID 2060 wrote to memory of 2316	2060	file.exe	108
PID 2316 wrote to memory of 736	2316	cmd.exe	110
PID 2316 wrote to memory of 736	2316	cmd.exe	110
PID 2060 wrote to memory of 1204	2060	file.exe	127
PID 2060 wrote to memory of 1204	2060	file.exe	127
PID 2060 wrote to memory of 1204	2060	file.exe	127
PID 1204 wrote to memory of 1688	1204	cmd.exe	131
PID 1204 wrote to memory of 1688	1204	cmd.exe	131
PID 1204 wrote to memory of 1688	1204	cmd.exe	131

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:2060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 460
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 776
  2⤵
  - Program crash
  PID:4320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 796
  2⤵
  - Program crash
  PID:1308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 764
  2⤵
  - Program crash
  PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 840
  2⤵
  - Program crash
  PID:2816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 928
  2⤵
  - Program crash
  PID:4640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 936
  2⤵
  - Program crash
  PID:4920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 1064
  2⤵
  - Program crash
  PID:3132
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 1364
  2⤵
  - Program crash
  PID:3116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\E7reFZbhJFrw6cWwEJV\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Users\Admin\AppData\Local\Temp\E7reFZbhJFrw6cWwEJV\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\E7reFZbhJFrw6cWwEJV\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:736
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 736 -s 1596
      4⤵
      Program crash
      PID:240
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 1412
  2⤵
  - Program crash
  PID:4972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 1776
  2⤵
  - Program crash
  PID:3160
- 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:1204
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2060 -s 520
  2⤵
  - Program crash
  PID:2380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2060 -ip 2060
1⤵
PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2060 -ip 2060
1⤵
PID:4416

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2060 -ip 2060
1⤵
PID:408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2060 -ip 2060
1⤵
PID:4608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2060 -ip 2060
1⤵
PID:1404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2060 -ip 2060
1⤵
PID:2256

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2060 -ip 2060
1⤵
PID:3684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2060 -ip 2060
1⤵
PID:452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2060 -ip 2060
1⤵
PID:2876

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 544 -p 736 -ip 736
1⤵
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2060 -ip 2060
1⤵
PID:776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2060 -ip 2060
1⤵
PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2060 -ip 2060
1⤵
PID:2440

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\E7reFZbhJFrw6cWwEJV\Bunifu_UI_v1.5.3.dll
Size 236KB
SHA256 f1b3e0f2750a9103e46a6a4a34f1cf9d17779725f98042cc2475ec66484801cf
MD5 2ecb51ab00c5f340380ecf849291dbcf
SHA1 1a4dffbce2a4ce65495ed79eab42a4da3b660931
SHA512 e241a48eafcaf99187035f0870d24d74ae97fe84aaadd2591cceea9f64b8223d77cfb17a038a58eadd3b822c5201a6f7494f26eea6f77d95f77f6c668d088e6b
SSDEEP 6144:SIQpxILDXGGMO7Ice9C5kQw2hWHcHTykhb:SIQpxILDXGGlET9n/cHG
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\E7reFZbhJFrw6cWwEJV\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\E7reFZbhJFrw6cWwEJV\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/736-143-0x000001FE9AF50000-0x000001FE9AF92000-memory.dmp

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memory/736-146-0x00007FF85FF10000-0x00007FF8609D1000-memory.dmp

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memory/736-145-0x00007FF85FF10000-0x00007FF8609D1000-memory.dmp

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memory/736-141-0x000001FE807C0000-0x000001FE80916000-memory.dmp

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memory/736-144-0x00007FF85FF10000-0x00007FF8609D1000-memory.dmp

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memory/2060-147-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2060-136-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/2060-135-0x00000000007FD000-0x0000000000823000-memory.dmp

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memory/2060-132-0x00000000007FD000-0x0000000000823000-memory.dmp

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memory/2060-134-0x0000000000400000-0x0000000000594000-memory.dmp

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memory/2060-133-0x00000000006E0000-0x000000000071F000-memory.dmp

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memory/2060-153-0x00000000007FD000-0x0000000000823000-memory.dmp

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memory/2060-154-0x0000000000400000-0x0000000000594000-memory.dmp

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