nymaim | cf1d954d28450dfbecce6d8d93d73a8526407261df872867ecc373da1129105b

Analysis

max time kernel
138s
max time network
157s
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, 11:08

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 233KB
Sample221003-m8jmtsdbe7
SHA256 cf1d954d28450dfbecce6d8d93d73a8526407261df872867ecc373da1129105b
MD5 8589d0babc5495274097a0b40ad5e8a9
SHA1 d9f4c9f032b73d8203cd0012b5422b9672875ef6
SHA512 a487a671b4a0c3ca478da415be45c4d1c20126030f45146917faebc9a253c6ca9e937bb32fdd51badbf009c121eb6988fdcce78a884f37c5879d769b973a965e
SSDEEP 3072:yKijhaRZCSHDKPx3O9ROHJjnFyeiJclo7iMO+k7n7+G4RrFxWcUWtdsWBRtFfJUj:yKLHDKPhOqpjFyeiJVVk773hWFftFF
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
4024	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

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000300000001e6b9-139.dat	autoit_exe
behavioral2/files/0x000300000001e6b9-140.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 10 IoCs

pid	pid_target	Process	procid_target
4504	3672	WerFault.exe	28
4656	3672	WerFault.exe	28
5116	3672	WerFault.exe	28
456	3672	WerFault.exe	28
4936	3672	WerFault.exe	28
2732	3672	WerFault.exe	28
4728	3672	WerFault.exe	28
1876	3672	WerFault.exe	28
3816	3672	WerFault.exe	28
2208	3672	WerFault.exe	28

Kills process with taskkill 1 IoCs

evasion

pid	Process
4824	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3672	file.exe
3672	file.exe
3672	file.exe
3672	file.exe
3672	file.exe
3672	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3672	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4024	Cleaner.exe
Token: SeDebugPrivilege	4824	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 3172	3672	file.exe	101
PID 3672 wrote to memory of 3172	3672	file.exe	101
PID 3672 wrote to memory of 3172	3672	file.exe	101
PID 3172 wrote to memory of 4024	3172	cmd.exe	103
PID 3172 wrote to memory of 4024	3172	cmd.exe	103
PID 3672 wrote to memory of 3704	3672	file.exe	117
PID 3672 wrote to memory of 3704	3672	file.exe	117
PID 3672 wrote to memory of 3704	3672	file.exe	117
PID 3704 wrote to memory of 4824	3704	cmd.exe	119
PID 3704 wrote to memory of 4824	3704	cmd.exe	119
PID 3704 wrote to memory of 4824	3704	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:3672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 768
  2⤵
  - Program crash
  PID:4504
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 828
  2⤵
  - Program crash
  PID:4656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 828
  2⤵
  - Program crash
  PID:5116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 880
  2⤵
  - Program crash
  PID:456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 768
  2⤵
  - Program crash
  PID:4936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 876
  2⤵
  - Program crash
  PID:2732
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1188
  2⤵
  - Program crash
  PID:4728
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1360
  2⤵
  - Program crash
  PID:1876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3172
- - C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4024
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1368
  2⤵
  - Program crash
  PID:3816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1692
  2⤵
  - Program crash
  PID:2208
- 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:3704
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 3672 -ip 3672
1⤵
PID:3996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3672 -ip 3672
1⤵
PID:4872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3672 -ip 3672
1⤵
PID:628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 396 -p 3672 -ip 3672
1⤵
PID:4756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3672 -ip 3672
1⤵
PID:1196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3672 -ip 3672
1⤵
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3672 -ip 3672
1⤵
PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3672 -ip 3672
1⤵
PID:3624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 3672 -ip 3672
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3672 -ip 3672
1⤵
PID:4648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3672 -ip 3672
1⤵
PID:3924

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

Loading Replay Monitor...

Downloads

Bunifu_UI_v1.5.3.dll

Path C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\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

Submit Download

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\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

Submit Download

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\NNrkm85welVtLFOiGncc\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

Submit Download

memory/3672-136-0x0000000000400000-0x0000000000596000-memory.dmp

Download

memory/3672-146-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/3672-152-0x0000000000400000-0x0000000000596000-memory.dmp

Download

memory/3672-135-0x000000000077D000-0x00000000007A3000-memory.dmp

Download

memory/3672-134-0x0000000000400000-0x0000000000596000-memory.dmp

Download

memory/3672-151-0x000000000077D000-0x00000000007A3000-memory.dmp

Download

memory/3672-133-0x00000000006F0000-0x000000000072F000-memory.dmp

Download

memory/3672-132-0x000000000077D000-0x00000000007A3000-memory.dmp

Download

memory/4024-144-0x00007FFC9EFF0000-0x00007FFC9FAB1000-memory.dmp

Download

memory/4024-145-0x00007FFC9EFF0000-0x00007FFC9FAB1000-memory.dmp

Download

memory/4024-143-0x0000029529640000-0x0000029529682000-memory.dmp

Download

memory/4024-141-0x000002950E3A0000-0x000002950E4F6000-memory.dmp

Download