nymaim | c2f09f0013bdeef6be567760c14c6da99d4866e30745a1eb07b878f31185eded

Analysis

max time kernel
99s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
06/10/2022, 01:13

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General

Target
file.exe
Size 234KB
Sample221006-bk3v1sgcdq
SHA256 c2f09f0013bdeef6be567760c14c6da99d4866e30745a1eb07b878f31185eded
MD5 144c0c4931f17127641cf43ee2c4a871
SHA1 f6b50d106033321e5fa4149f78095081de77d1b1
SHA512 c94242e008f21a2c8d4f038f3a930064458865cd0d680b16e3b00379fe227c3de0c434088b19e896c0d023423f78ef18eba29d2d575f7be2adc3ea792f1bd2a7
SSDEEP 6144:CSdEI+3sE+eXOvx6tbZrLP7ZW13NbHLmb:CSd83slEuxgbZnPNWzHLU
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
1356	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

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
1672	2256	WerFault.exe	82
1472	2256	WerFault.exe	82
5044	2256	WerFault.exe	82
3796	2256	WerFault.exe	82
4612	2256	WerFault.exe	82
1348	2256	WerFault.exe	82
4628	2256	WerFault.exe	82
4740	2256	WerFault.exe	82
2164	2256	WerFault.exe	82
1144	2256	WerFault.exe	82
4352	2256	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
5012	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2256	file.exe
2256	file.exe
2256	file.exe
2256	file.exe
2256	file.exe
2256	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2256	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1356	Cleaner.exe
Token: SeDebugPrivilege	5012	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 3528	2256	file.exe	105
PID 2256 wrote to memory of 3528	2256	file.exe	105
PID 2256 wrote to memory of 3528	2256	file.exe	105
PID 3528 wrote to memory of 1356	3528	cmd.exe	107
PID 3528 wrote to memory of 1356	3528	cmd.exe	107
PID 2256 wrote to memory of 4728	2256	file.exe	116
PID 2256 wrote to memory of 4728	2256	file.exe	116
PID 2256 wrote to memory of 4728	2256	file.exe	116
PID 4728 wrote to memory of 5012	4728	cmd.exe	120
PID 4728 wrote to memory of 5012	4728	cmd.exe	120
PID 4728 wrote to memory of 5012	4728	cmd.exe	120

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:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 456
  2⤵
  - Program crash
  PID:1672
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 764
  2⤵
  - Program crash
  PID:1472
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 804
  2⤵
  - Program crash
  PID:5044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 780
  2⤵
  - Program crash
  PID:3796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 788
  2⤵
  - Program crash
  PID:4612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 816
  2⤵
  - Program crash
  PID:1348
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1004
  2⤵
  - Program crash
  PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1376
  2⤵
  - Program crash
  PID:4740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\1MtFzowt4p7yb9W8BTiY\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3528
- - C:\Users\Admin\AppData\Local\Temp\1MtFzowt4p7yb9W8BTiY\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\1MtFzowt4p7yb9W8BTiY\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1412
  2⤵
  - Program crash
  PID:2164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 1824
  2⤵
  - Program crash
  PID:1144
- 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:4728
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 516
  2⤵
  - Program crash
  PID:4352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2256 -ip 2256
1⤵
PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2256 -ip 2256
1⤵
PID:4008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2256 -ip 2256
1⤵
PID:228

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 2256 -ip 2256
1⤵
PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2256 -ip 2256
1⤵
PID:1236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 2256 -ip 2256
1⤵
PID:1124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 2256 -ip 2256
1⤵
PID:3752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 2256 -ip 2256
1⤵
PID:5060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2256 -ip 2256
1⤵
PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2256 -ip 2256
1⤵
PID:4528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 580 -p 2256 -ip 2256
1⤵
PID:4780

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\1MtFzowt4p7yb9W8BTiY\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\1MtFzowt4p7yb9W8BTiY\Cleaner.exe
Size 2.4MB
SHA256 cd6bb6fdf80bec69630a61707383e6430463751463635f35fce42eb97daa7060
MD5 79754768767380ef36ef446c6a1709e4
SHA1 2af83a6e20d7efc3119d312534b3f3968d17776e
SHA512 6f88e9e5f5309ff1e87666a8066333660db37f85031db6dbfb28460700a31d303e140f8dd5fe0e71f2de01706ac7e1317b8a6fd2d992a47bdaa3bb591965f461
SSDEEP 24576:wO4dHPD/oAR4d3G/oAXndxzGmTG2/mR29SGeodc0GmTG2/mR6Trr2h60qP:w/PD/DL/D9CuZrr2h60qP
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\1MtFzowt4p7yb9W8BTiY\Cleaner.exe
Size 2.4MB
SHA256 cd6bb6fdf80bec69630a61707383e6430463751463635f35fce42eb97daa7060
MD5 79754768767380ef36ef446c6a1709e4
SHA1 2af83a6e20d7efc3119d312534b3f3968d17776e
SHA512 6f88e9e5f5309ff1e87666a8066333660db37f85031db6dbfb28460700a31d303e140f8dd5fe0e71f2de01706ac7e1317b8a6fd2d992a47bdaa3bb591965f461
SSDEEP 24576:wO4dHPD/oAR4d3G/oAXndxzGmTG2/mR29SGeodc0GmTG2/mR6Trr2h60qP:w/PD/DL/D9CuZrr2h60qP
MD5 SHA1 SHA512 SSDEEP

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memory/1356-142-0x00007FF96FC20000-0x00007FF9706E1000-memory.dmp

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memory/1356-145-0x00007FF96FC20000-0x00007FF9706E1000-memory.dmp

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memory/1356-141-0x000001BFE8290000-0x000001BFE82D2000-memory.dmp

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memory/1356-139-0x000001BFE6420000-0x000001BFE6592000-memory.dmp

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memory/2256-133-0x0000000002310000-0x000000000234F000-memory.dmp

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memory/2256-134-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2256-132-0x000000000074D000-0x0000000000773000-memory.dmp

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memory/2256-143-0x000000000074D000-0x0000000000773000-memory.dmp

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memory/2256-144-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/2256-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2256-152-0x0000000000400000-0x0000000000597000-memory.dmp

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