nymaim | 665c371dacdf8ce7e99e70e5f84c8bc40dda262aa74df372e413c350c30d1f0a

Analysis

max time kernel
107s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02/10/2022, 00:29

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General

Target
file.exe
Size 235KB
Sample221002-asxhjadfh2
SHA256 665c371dacdf8ce7e99e70e5f84c8bc40dda262aa74df372e413c350c30d1f0a
MD5 9c12f74f09bb183f1b1cafdd24fab56a
SHA1 30d5653c8416c4027efc4dd0b93fff0990f5b7ee
SHA512 237e28aebe37d7b95daf0d228fbfcd7d7104b577156674765589e784d83576d399515ff9bf2911ecf19aa720653d24d32b26ef2e6e4a9b51c38419b6fb6ee888
SSDEEP 3072:NR1Tts8vRxFasBDqd6JIUKU8u8uPmkqpl8cRObISriT2ZpD9LsBq9k:BtsMdq4JIu8u8uhU9Itp9Lsa
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
2064	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
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
4820	3324	WerFault.exe	82
4376	3324	WerFault.exe	82
3100	3324	WerFault.exe	82
2280	3324	WerFault.exe	82
3584	3324	WerFault.exe	82
4512	3324	WerFault.exe	82
4272	3324	WerFault.exe	82
2392	3324	WerFault.exe	82
3912	3324	WerFault.exe	82
1796	3324	WerFault.exe	82
4672	3324	WerFault.exe	82

Kills process with taskkill 1 IoCs

evasion

pid	Process
2300	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3324	file.exe
3324	file.exe
3324	file.exe
3324	file.exe
3324	file.exe
3324	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3324	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2064	Cleaner.exe
Token: SeDebugPrivilege	2300	taskkill.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3324 wrote to memory of 3004	3324	file.exe	106
PID 3324 wrote to memory of 3004	3324	file.exe	106
PID 3324 wrote to memory of 3004	3324	file.exe	106
PID 3004 wrote to memory of 2064	3004	cmd.exe	108
PID 3004 wrote to memory of 2064	3004	cmd.exe	108
PID 3324 wrote to memory of 3872	3324	file.exe	129
PID 3324 wrote to memory of 3872	3324	file.exe	129
PID 3324 wrote to memory of 3872	3324	file.exe	129
PID 3872 wrote to memory of 2300	3872	cmd.exe	133
PID 3872 wrote to memory of 2300	3872	cmd.exe	133
PID 3872 wrote to memory of 2300	3872	cmd.exe	133

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:3324
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 452
  2⤵
  - Program crash
  PID:4820
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 768
  2⤵
  - Program crash
  PID:4376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 776
  2⤵
  - Program crash
  PID:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 776
  2⤵
  - Program crash
  PID:2280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 800
  2⤵
  - Program crash
  PID:3584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 928
  2⤵
  - Program crash
  PID:4512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 976
  2⤵
  - Program crash
  PID:4272
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 1368
  2⤵
  - Program crash
  PID:2392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\blhEmdvRdC9gxHbiQJ\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Users\Admin\AppData\Local\Temp\blhEmdvRdC9gxHbiQJ\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\blhEmdvRdC9gxHbiQJ\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 1368
  2⤵
  - Program crash
  PID:3912
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 1656
  2⤵
  - Program crash
  PID:1796
- 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:3872
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3324 -s 1632
  2⤵
  - Program crash
  PID:4672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 188 -p 3324 -ip 3324
1⤵
PID:4224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3324 -ip 3324
1⤵
PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3324 -ip 3324
1⤵
PID:2340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3324 -ip 3324
1⤵
PID:1000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3324 -ip 3324
1⤵
PID:3436

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3324 -ip 3324
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3324 -ip 3324
1⤵
PID:2156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3324 -ip 3324
1⤵
PID:1116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3324 -ip 3324
1⤵
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3324 -ip 3324
1⤵
PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 3324 -ip 3324
1⤵
PID:3184

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\blhEmdvRdC9gxHbiQJ\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\blhEmdvRdC9gxHbiQJ\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\blhEmdvRdC9gxHbiQJ\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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memory/2064-144-0x00007FFD4FEB0000-0x00007FFD50971000-memory.dmp

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memory/2064-143-0x00000178C76A0000-0x00000178C76E2000-memory.dmp

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memory/2064-145-0x00007FFD4FEB0000-0x00007FFD50971000-memory.dmp

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memory/2064-141-0x00000178ABBE0000-0x00000178ABD38000-memory.dmp

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memory/3324-135-0x000000000078D000-0x00000000007B3000-memory.dmp

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memory/3324-133-0x00000000006F0000-0x000000000072F000-memory.dmp

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memory/3324-132-0x000000000078D000-0x00000000007B3000-memory.dmp

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memory/3324-134-0x0000000000400000-0x0000000000598000-memory.dmp

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memory/3324-146-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3324-136-0x0000000000400000-0x0000000000598000-memory.dmp

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memory/3324-152-0x000000000078D000-0x00000000007B3000-memory.dmp

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memory/3324-153-0x0000000000400000-0x0000000000598000-memory.dmp

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