stealc | 0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7

Analysis

max time kernel
147s
max time network
141s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
09-05-2024 23:45

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General

Target

0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe
Size

384KB
MD5

43264cd42595772d0adb93101b527941
SHA1

40e5fe656af1f66d191b617bf970ec6271ed59e9
SHA256

0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7
SHA512

1e6d8b5e64dda611107de0f97d19f4bb347458f78b0c11f469572cca8e9c489407847cba42c4668d42f868292bb647543b41d1270f6b0c3283e9ab6a192cdbd1
SSDEEP

12288:lvNMaEOh22VwmtX3FLa16B3FuOx6LiBwwF:lVrs25X3V66BoOxvVF

Score

10^/10

stealc zgrat discovery rat spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/5044-65-0x0000020DBA5C0000-0x0000020DBDDF4000-memory.dmp	family_zgrat_v1
behavioral2/memory/5044-66-0x0000020DD8800000-0x0000020DD890A000-memory.dmp	family_zgrat_v1
behavioral2/memory/5044-70-0x0000020DD86C0000-0x0000020DD86E4000-memory.dmp	family_zgrat_v1

Stealc
Stealc is an infostealer written in C++.
stealer stealc
ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
3924	u1s4.0.exe
2476	u1s4.1.exe

Loads dropped DLL 2 IoCs

pid	Process
3924	u1s4.0.exe
3924	u1s4.0.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
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
2264	2308	WerFault.exe	79
4564	3924	WerFault.exe	85

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	u1s4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1s4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1s4.1.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	u1s4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1s4.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3924	u1s4.0.exe
3924	u1s4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5044	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe
2476	u1s4.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2308 wrote to memory of 3924	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	85
PID 2308 wrote to memory of 3924	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	85
PID 2308 wrote to memory of 3924	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	85
PID 2308 wrote to memory of 2476	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	88
PID 2308 wrote to memory of 2476	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	88
PID 2308 wrote to memory of 2476	2308	0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe	88
PID 2476 wrote to memory of 5044	2476	u1s4.1.exe	93
PID 2476 wrote to memory of 5044	2476	u1s4.1.exe	93

C:\Users\Admin\AppData\Local\Temp\0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe
"C:\Users\Admin\AppData\Local\Temp\0289c93b052c75bfa89ced81e2d0dcd1778d7b6123eb55ea9d9713c3d6950bc7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2308
- C:\Users\Admin\AppData\Local\Temp\u1s4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1s4.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3924
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3924 -s 2472
    3⤵
    - Program crash
    PID:4564
- C:\Users\Admin\AppData\Local\Temp\u1s4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1s4.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2476
- - C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
    "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:5044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2308 -s 1492
  2⤵
  - Program crash
  PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2308 -ip 2308
1⤵
PID:2932

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3924 -ip 3924
1⤵
PID:2692

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

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
2KB

MD5
5ac4246248ce5cf10333ec4a1744335d

SHA1
90b00485ffcef61d13583f0ad1adcea6367d613a

SHA256
5bee5b580d49cbc2ea21d8e13887a31f5c735f852f1ce57d4aa74468a5b0c295

SHA512
9f88e0e8d784609358cf9f3f3185080d404ef7884d23495095273c743acd886c4b2cdb098baabf5a2532137da5d6a71420a8578bc98f9e22f0a2a0fa2ed93018

Download Submit
C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

Filesize
3KB

MD5
ae0bf3f9263e96bec97247369e771072

SHA1
d7673b5ca65a2d298023f906939ea919ceb537d3

SHA256
ab71d69965af6334ff2862687dbdcd4ee834c85503d7762dd65ceaab03e1ce7d

SHA512
c10296f63a312c7d8e71a2a98de0476407ea778dc04a0ba4dd8e991f410ffd8ea9a4a95e24e4e33f67125c1e6f6cb4d1a3e66af37f4d67ce5b08eabc738de66c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1s4.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1s4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/2308-2-0x0000000002C20000-0x0000000002D20000-memory.dmp

Filesize
1024KB

Download
memory/2308-35-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/2308-3-0x0000000002E90000-0x0000000002EFC000-memory.dmp

Filesize
432KB

Download
memory/2308-1-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/2308-4-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2308-36-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/2476-63-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2476-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3924-178-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/3924-143-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/3924-98-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3924-97-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/5044-75-0x0000020DD8B60000-0x0000020DD8B82000-memory.dmp

Filesize
136KB

Download
memory/5044-89-0x0000020DDDE50000-0x0000020DDE378000-memory.dmp

Filesize
5.2MB

Download
memory/5044-74-0x0000020DD8B10000-0x0000020DD8B60000-memory.dmp

Filesize
320KB

Download
memory/5044-73-0x0000020DD8770000-0x0000020DD879A000-memory.dmp

Filesize
168KB

Download
memory/5044-76-0x0000020DD8730000-0x0000020DD873A000-memory.dmp

Filesize
40KB

Download
memory/5044-80-0x0000020DD8B90000-0x0000020DD8E90000-memory.dmp

Filesize
3.0MB

Download
memory/5044-82-0x0000020DDD5D0000-0x0000020DDD5D8000-memory.dmp

Filesize
32KB

Download
memory/5044-83-0x0000020DDCF10000-0x0000020DDCF48000-memory.dmp

Filesize
224KB

Download
memory/5044-84-0x0000020DDCEE0000-0x0000020DDCEEE000-memory.dmp

Filesize
56KB

Download
memory/5044-85-0x0000020DDCF00000-0x0000020DDCF08000-memory.dmp

Filesize
32KB

Download
memory/5044-86-0x0000020DDD880000-0x0000020DDD88A000-memory.dmp

Filesize
40KB

Download
memory/5044-87-0x0000020DDD8A0000-0x0000020DDD902000-memory.dmp

Filesize
392KB

Download
memory/5044-88-0x0000020DDD900000-0x0000020DDD922000-memory.dmp

Filesize
136KB

Download
memory/5044-72-0x0000020DD8A60000-0x0000020DD8B12000-memory.dmp

Filesize
712KB

Download
memory/5044-92-0x0000020DDD600000-0x0000020DDD60C000-memory.dmp

Filesize
48KB

Download
memory/5044-93-0x0000020DDD6E0000-0x0000020DDD756000-memory.dmp

Filesize
472KB

Download
memory/5044-94-0x0000020DD8FB0000-0x0000020DD8FCE000-memory.dmp

Filesize
120KB

Download
memory/5044-96-0x0000020DD8480000-0x0000020DD8633000-memory.dmp

Filesize
1.7MB

Download
memory/5044-71-0x0000020DD86F0000-0x0000020DD86FA000-memory.dmp

Filesize
40KB

Download
memory/5044-70-0x0000020DD86C0000-0x0000020DD86E4000-memory.dmp

Filesize
144KB

Download
memory/5044-69-0x0000020DD8650000-0x0000020DD8664000-memory.dmp

Filesize
80KB

Download
memory/5044-67-0x0000020DD8640000-0x0000020DD8650000-memory.dmp

Filesize
64KB

Download
memory/5044-68-0x0000020DD8660000-0x0000020DD866C000-memory.dmp

Filesize
48KB

Download
memory/5044-66-0x0000020DD8800000-0x0000020DD890A000-memory.dmp

Filesize
1.0MB

Download
memory/5044-65-0x0000020DBA5C0000-0x0000020DBDDF4000-memory.dmp

Filesize
56.2MB

Download