stealc | 82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221

Analysis

max time kernel
147s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20240419-en
resource tags

arch:x64arch:x86image:win11-20240419-enlocale:en-usos:windows11-21h2-x64system
submitted
03/05/2024, 16:14

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General

Target
82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe
Size 455KB
Sample240503-tp2smadf87
SHA256 82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221
MD5 cc4887a22e02452f207d976853205876
SHA1 eaf5afc292e8d59f9d9fd1e1bcb5c836e090c27e
SHA512 e41a28f3197161ef7e094bdff5d5ffa7e8ef0493584140e7d8800f1e01125b43067fa0feec97ff83c1c1708dee654f3ad55b065f432165d3ab97b4cf1dd756e6
SSDEEP 6144:/kQovcEzShy9BhYyKVPJq/URCX68fELkHlVAwmN8HGPq1Mv4qb4/Y:8QoUgSUAnRCL8YHLAWH9eAU4/Y
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Downloads MZ/PE file

Executes dropped EXE 3 IoCs

pid	Process
2956	u2v8.0.exe
2012	run.exe
3096	u2v8.3.exe

Loads dropped DLL 5 IoCs

pid	Process
2012	run.exe
2012	run.exe
2012	run.exe
2956	u2v8.0.exe
2956	u2v8.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2012 set thread context of 2360	2012	run.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3644	3716	WerFault.exe	79
4844	2956	WerFault.exe	81

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2v8.3.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2v8.3.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2v8.3.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u2v8.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2v8.0.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2956	u2v8.0.exe
2956	u2v8.0.exe
2012	run.exe
2012	run.exe
2956	u2v8.0.exe
2956	u2v8.0.exe
2360	cmd.exe
2360	cmd.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2012	run.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe
3096	u2v8.3.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3716 wrote to memory of 2956	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	81
PID 3716 wrote to memory of 2956	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	81
PID 3716 wrote to memory of 2956	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	81
PID 3716 wrote to memory of 2012	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	84
PID 3716 wrote to memory of 2012	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	84
PID 3716 wrote to memory of 2012	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	84
PID 2012 wrote to memory of 2360	2012	run.exe	86
PID 2012 wrote to memory of 2360	2012	run.exe	86
PID 2012 wrote to memory of 2360	2012	run.exe	86
PID 3716 wrote to memory of 3096	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	88
PID 3716 wrote to memory of 3096	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	88
PID 3716 wrote to memory of 3096	3716	82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe	88
PID 2012 wrote to memory of 2360	2012	run.exe	86

C:\Users\Admin\AppData\Local\Temp\82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe
"C:\Users\Admin\AppData\Local\Temp\82de6691fa7b496be845504326bdaeb00d0c1c0aa435ff9daf3660cfd7f50221.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Users\Admin\AppData\Local\Temp\u2v8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2v8.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2956
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2956 -s 2440
    3⤵
    - Program crash
    PID:4844
- C:\Users\Admin\AppData\Local\Temp\u2v8.2\run.exe
  "C:\Users\Admin\AppData\Local\Temp\u2v8.2\run.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\SysWOW64\cmd.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2360
- C:\Users\Admin\AppData\Local\Temp\u2v8.3.exe
  "C:\Users\Admin\AppData\Local\Temp\u2v8.3.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  PID:3096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3716 -s 1872
  2⤵
  - Program crash
  PID:3644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3716 -ip 3716
1⤵
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2956 -ip 2956
1⤵
PID:3064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Are.docx

Path C:\ProgramData\Are.docx
Size 11KB
SHA256 5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454
MD5 a33e5b189842c5867f46566bdbf7a095
SHA1 e1c06359f6a76da90d19e8fd95e79c832edb3196
SHA512 f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b
SSDEEP 192:CtNCEE33S7Ok0CMSYbcBVk6tqM16iPBkeawLWdxd7o3Lp:aNwC78uYbcBv6akwLWdxdE3Lp
MD5 SHA1 SHA512 SSDEEP

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mozglue.dll

Path C:\ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path C:\ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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c6f2b1a0

Path C:\Users\Admin\AppData\Local\Temp\c6f2b1a0
Size 1.4MB
SHA256 2045f9548ed53f188d070d94f6355e50c34d8dfa1a1fcaaee12cc3f30507ac48
MD5 62a8d939f38fd4b723a9984537e9ca61
SHA1 f82b334646fbbf756aed15a8074ae6d8be1956ff
SHA512 b734b2f9fc8afb5f6472939188e321079b4c72e5b528b50d8b01ef283461e32b4481a071085f79af7001afdf0666ff74b522aa867d94429dabfe9dd2968ae0de
SSDEEP 24576:KPJdjkf+1t0gTgy4/YxxRVWuwgIrzNzHOF85NK2hNTzVWrCKRR7uXTU42dDtIHUy:KPJlkYt0gTgy3RVW/gIrJzuF8D9nVWrC
MD5 SHA1 SHA512 SSDEEP

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u2v8.0.exe

Path C:\Users\Admin\AppData\Local\Temp\u2v8.0.exe
Size 310KB
SHA256 4a4e50beb8a3705039b448a8c31064a5f9ed32a691875a5a9514625596511a95
MD5 659e0a9088603b6a6be81fa4a5634203
SHA1 a2bc14399bbb28d7d0249c82ae9c601330bd6b2a
SHA512 f5c2dcd0a1686fcd286f83d951c9f4659bb3d6ac813759c4914f13025e0f1dd25f6572e32e982ab3e5a85bc0297156e23441a0bb3fdb25a19fe7010b0eea522b
SSDEEP 3072:A/RWPllpAatPCGi+ETpjCXmIsmEuM7nNzozfTjghCZ+ak39QHQBRgF5GFusKDJmB:Fz+Aaa7EuONETjghCE2QBGuz
MD5 SHA1 SHA512 SSDEEP

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u2v8.1.zip

Path C:\Users\Admin\AppData\Local\Temp\u2v8.1.zip
Size 1.6MB
SHA256 44afbc66f029be48db5d01678a0af7baf541e4a61d4b07391aa0470f0a961ded
MD5 9bb67e904ac371b5ffd143f8fb54e1e2
SHA1 58009e463133af8b89b59716fe255b118eca872c
SHA512 573c196dc87a1d3ea22b3ebdd2be1e4fbfbd3ea431694ec5e503f5cc6717b7d63a478c5c981ba5b467176aadd352c92f1d026b60a28b8ff76390af6903c1cdc0
SSDEEP 49152:F1aZFvOz9iTy8tR/z2zuVqD3hZ3t3MuIoDo:D8vu6y8b7+uQD3hZ3ZMuIos
MD5 SHA1 SHA512 SSDEEP

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ASUS_WMI.dll

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\ASUS_WMI.dll
Size 224KB
SHA256 6523b44da6fa7078c7795b7705498e487b0625e28e15aec2d270c6e4a909b5a5
MD5 3f109a02c8d642e8003a1188df40d861
SHA1 f723f38471b8872443aa9177eef12a96c02cc84a
SHA512 023696a52d48c465ab62e3ee754b445093b8a0ed0a232b430ce1f0db3dae382c9e1fba210c2b04d1018cc29bfb69c546976912f3939a76e98bcb792ae57af0da
SSDEEP 3072:Y4WuqFgPmBNRP8hXzGXPkW6ZZW8egH1/jQoAg0FubAxZ+051gh9b6q4TQWdO8g:Y9t2nhQ2ZW8ecAOAZCqQWY8g
MD5 SHA1 SHA512 SSDEEP

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ATKEX.dll

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\ATKEX.dll
Size 84KB
SHA256 c8b16f1c6883a23021da37d9116a757f971fe919d64ef8f9dba17a7d8dd39adb
MD5 e68562f63265e1a70881446b4b9dc455
SHA1 da16ef9367bde3ce892b1a0e33bc179d8acdceb3
SHA512 6bedea10a5b50f6e93e8566c18970c8ad1b8dfc7d5961069fc5d5216dcdded0b2a2ad8dd91f4ad80f8604d573a343c126df238ee5c448cdc26b899077957a674
SSDEEP 1536:C3zQ0q8XqIh06v0UQpTcX+CZntb9lviEossWVcd+u8Nc15TCvOM:UqhIh06vKpTcX+El2+uKc15TCF
MD5 SHA1 SHA512 SSDEEP

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AsIO.dll

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\AsIO.dll
Size 120KB
SHA256 03951dfe05bf74c61568aed50b9d8ce5ecf0e0c2b8e73bc37e1a699ae7eebc9d
MD5 f383f6f4e764619bd19e319335d3ef2b
SHA1 99f287e49a15e495b4ead8e5589364a5f87b357e
SHA512 6fa960a084f42e6de25b74782d205c48ca9329997fc2ae8db902bb653da5e878ed92ced6b37472248d5bdc820fc48080ae4fce41556c4b20a049e30bf93d6934
SSDEEP 3072:3+CK0llptaTHfPwr5pm6Qi0YqvPZud7YvL:3xbllaborzQtEYT
MD5 SHA1 SHA512 SSDEEP

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doubled.doc

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\doubled.doc
Size 1.2MB
SHA256 3cf94707697ce0141960b05a15cbd3c3b791196995b1d21c4ff6bfb59997e235
MD5 f344794dc910dc343f92ded2c6b5e0ab
SHA1 e5878518ce55ce5bd1890d5e04a82eb22d5a848a
SHA512 ee00ad0c728c750b6c75001ba52df7ef367bebf1cbc01e2c9370dd42b1867b5347d5e68254f427dddde3214f2fae1341ab76c7faa3a4724e1d1d43fae97d3a58
SSDEEP 24576:77pQBAFnc64wjzu1XITnibi+kiIGOZoEEW8o9JwxQ2sADojAOjIvgrf25JgOZNR:77pQq74wjzQXgn4i/OEEWZYxQvAIpjId
MD5 SHA1 SHA512 SSDEEP

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protactinium.log

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\protactinium.log
Size 84KB
SHA256 6565f36d224ff27d89ad39a0d87f851f64308834d86e8a7cd02e9e1ea44187c8
MD5 a276acc3fd657d7665bd4ddce8fb9749
SHA1 c02642eec3f4e8b0314045ee95e0a15abd853ea8
SHA512 178476d229ff011cb1f39048acae46b42a80b2ec209b283a8237604646b09224446c5bb3a690191c4fd58813611d7c06b4fb23699cd76ad020a5d0bf4d456d79
SSDEEP 1536:wBtn6z1HczTFKR2ZW88t9InGEZ3VSDzt9Xsyj+6AwNbXFlj7J2gin/Owq:wBtS18zT42ZIQNp6lvb1lIT/Owq
MD5 SHA1 SHA512 SSDEEP

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run.exe

Path C:\Users\Admin\AppData\Local\Temp\u2v8.2\run.exe
Size 446KB
SHA256 12c22ba646232d5d5087d0300d5cfd46fed424f26143a02dc866f1bfceab3c10
MD5 485008b43f0edceba0e0d3ca04bc1c1a
SHA1 55ae8f105af415bb763d1b87f6572f078052877c
SHA512 402652786daae635c7405f5fa0924d768cbde2086f9f57b10f00f921dec98e37168f5c3a6baa5593ba9a478f3971d32747c517ffd485d25634c924e6b08815b1
SSDEEP 12288:vK5+DMJA3TAz4plk9iZOOti81N5y1qMIg+GV5Zul3M:y5+DMJA3TAz4plk9ijK1qlGV7ulM
MD5 SHA1 SHA512 SSDEEP

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u2v8.3.exe

Path C:\Users\Admin\AppData\Local\Temp\u2v8.3.exe
Size 4.6MB
SHA256 4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7
MD5 397926927bca55be4a77839b1c44de6e
SHA1 e10f3434ef3021c399dbba047832f02b3c898dbd
SHA512 cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954
SSDEEP 49152:1ZRCckM8wwGbtBiRFWSGqCW4FL5wslsAEL1ksS2NHsF3TjZ1I6bqmHC0Jg:1ZRCwrb64XwWsAwFaFXxg
MD5 SHA1 SHA512 SSDEEP

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memory/2012-236-0x0000000072C30000-0x0000000072DAD000-memory.dmp

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memory/2012-178-0x0000000072C30000-0x0000000072DAD000-memory.dmp

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memory/2012-179-0x00007FFE5E340000-0x00007FFE5E549000-memory.dmp

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memory/2360-254-0x00007FFE5E340000-0x00007FFE5E549000-memory.dmp

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memory/2956-33-0x0000000000400000-0x0000000001A18000-memory.dmp

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memory/2956-32-0x0000000000400000-0x0000000001A18000-memory.dmp

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memory/2956-231-0x0000000000400000-0x0000000001A18000-memory.dmp

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memory/2956-34-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/3716-7-0x0000000003620000-0x000000000368D000-memory.dmp

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memory/3716-3-0x0000000000400000-0x0000000000470000-memory.dmp

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memory/3716-4-0x0000000000400000-0x0000000001A3C000-memory.dmp

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memory/3716-229-0x0000000000400000-0x0000000000470000-memory.dmp

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memory/3716-228-0x0000000000400000-0x0000000001A3C000-memory.dmp

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memory/3716-6-0x0000000001B70000-0x0000000001C70000-memory.dmp

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memory/3716-8-0x0000000000400000-0x0000000000470000-memory.dmp

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memory/3716-1-0x0000000001B70000-0x0000000001C70000-memory.dmp

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memory/3716-2-0x0000000003620000-0x000000000368D000-memory.dmp

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