stealc | 735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf

Analysis

max time kernel
148s
max time network
152s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
09-05-2024 16:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe
Size

384KB
MD5

b144f886d68042cf93e23cfab80c632d
SHA1

53f6c6f673ff6ef2cdab2ed388bbd6eef34e0efa
SHA256

735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf
SHA512

115ec2b583926a7bc11f0b3e6bb08a330db20cf7015ad7d890a5cc6a4a2f7e5eb849d1bb9184b895ca9718163c84d6c24e1b10ffa22731b3b524cffeb5a82fa7
SSDEEP

6144:CvNcF7Kk1SAa5i2mfLPrzOMWRTco+7ASGdHhyUZwS6:CvNo+nAa5gnXo+c8aT6

Score

10^/10

stealc zgrat discovery rat 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/2256-68-0x00000296331A0000-0x00000296369D4000-memory.dmp	family_zgrat_v1
behavioral2/memory/2256-69-0x00000296513A0000-0x00000296514AA000-memory.dmp	family_zgrat_v1
behavioral2/memory/2256-73-0x0000029650FE0000-0x0000029651004000-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
3276	uvo.0.exe
2340	uvo.1.exe

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
4248	1140	WerFault.exe	79
4100	3276	WerFault.exe	82

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

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3276	uvo.0.exe
3276	uvo.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe
2340	uvo.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1140 wrote to memory of 3276	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	82
PID 1140 wrote to memory of 3276	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	82
PID 1140 wrote to memory of 3276	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	82
PID 1140 wrote to memory of 2340	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	85
PID 1140 wrote to memory of 2340	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	85
PID 1140 wrote to memory of 2340	1140	735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe	85
PID 2340 wrote to memory of 2256	2340	uvo.1.exe	90
PID 2340 wrote to memory of 2256	2340	uvo.1.exe	90

C:\Users\Admin\AppData\Local\Temp\735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe
"C:\Users\Admin\AppData\Local\Temp\735fc5e1baa4c307c1a90faab5c5ece5635545bcc39c98a7823456e488c5f2bf.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1140
- C:\Users\Admin\AppData\Local\Temp\uvo.0.exe
  "C:\Users\Admin\AppData\Local\Temp\uvo.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3276
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3276 -s 1356
    3⤵
    - Program crash
    PID:4100
- C:\Users\Admin\AppData\Local\Temp\uvo.1.exe
  "C:\Users\Admin\AppData\Local\Temp\uvo.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2340
- - 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:2256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1140 -s 684
  2⤵
  - Program crash
  PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1140 -ip 1140
1⤵
PID:2080

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3276 -ip 3276
1⤵
PID:2412

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
5c85a916e4383039c524ad7ad627ec23

SHA1
69e43b3e4de375bd49802b75ee6ec341f09a3e3d

SHA256
b3501c05ab2e343854a89efd30b2dcb155d83888bf2f29cba8f153363f6d4d2b

SHA512
cacd04cf22a6b81926e2698aebadafc08bf643da676d65f22c6df16c6c57812bb42b3b555e154eea23ad5400b728cfbd2ac579244cf476ac6ceeb39e04046a0d

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

Filesize
217KB

MD5
1485fe25a6d2bc50d097656c434822f1

SHA1
b8a4f204a92bad32df0e6af82a4ae04d71910ba9

SHA256
044d3469fd7a09f42ba4d342604e002f0ba770528747ba6d3cb7c4b77a975be6

SHA512
18346906dd80342281579602860c514f8e535bf25b3a0f1abe56f08aab52f203323b8d279e8df7c3723acf989aa0d438866675c22095386f8632a543b5dceaf0

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1140-2-0x0000000004890000-0x00000000048FC000-memory.dmp

Filesize
432KB

Download
memory/1140-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1140-16-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/1140-33-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1140-32-0x0000000004890000-0x00000000048FC000-memory.dmp

Filesize
432KB

Download
memory/1140-31-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/1140-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

Filesize
1024KB

Download
memory/2256-74-0x0000029651320000-0x000002965132A000-memory.dmp

Filesize
40KB

Download
memory/2256-85-0x00000296561B0000-0x00000296561B8000-memory.dmp

Filesize
32KB

Download
memory/2256-100-0x0000029651010000-0x00000296511C3000-memory.dmp

Filesize
1.7MB

Download
memory/2256-98-0x0000029656530000-0x000002965654E000-memory.dmp

Filesize
120KB

Download
memory/2256-68-0x00000296331A0000-0x00000296369D4000-memory.dmp

Filesize
56.2MB

Download
memory/2256-69-0x00000296513A0000-0x00000296514AA000-memory.dmp

Filesize
1.0MB

Download
memory/2256-71-0x00000296386F0000-0x00000296386FC000-memory.dmp

Filesize
48KB

Download
memory/2256-70-0x0000029636E60000-0x0000029636E70000-memory.dmp

Filesize
64KB

Download
memory/2256-72-0x00000296386E0000-0x00000296386F4000-memory.dmp

Filesize
80KB

Download
memory/2256-73-0x0000029650FE0000-0x0000029651004000-memory.dmp

Filesize
144KB

Download
memory/2256-96-0x00000296565D0000-0x0000029656646000-memory.dmp

Filesize
472KB

Download
memory/2256-76-0x0000029651600000-0x00000296516B2000-memory.dmp

Filesize
712KB

Download
memory/2256-75-0x0000029651350000-0x000002965137A000-memory.dmp

Filesize
168KB

Download
memory/2256-77-0x0000029651700000-0x0000029651750000-memory.dmp

Filesize
320KB

Download
memory/2256-78-0x0000029651750000-0x0000029651772000-memory.dmp

Filesize
136KB

Download
memory/2256-79-0x00000296386C0000-0x00000296386CA000-memory.dmp

Filesize
40KB

Download
memory/2256-83-0x0000029651780000-0x0000029651A80000-memory.dmp

Filesize
3.0MB

Download
memory/2256-95-0x00000296561F0000-0x00000296561FC000-memory.dmp

Filesize
48KB

Download
memory/2256-87-0x0000029655AC0000-0x0000029655ACE000-memory.dmp

Filesize
56KB

Download
memory/2256-86-0x0000029655AF0000-0x0000029655B28000-memory.dmp

Filesize
224KB

Download
memory/2256-88-0x0000029655AE0000-0x0000029655AE8000-memory.dmp

Filesize
32KB

Download
memory/2256-89-0x00000296561D0000-0x00000296561DA000-memory.dmp

Filesize
40KB

Download
memory/2256-90-0x0000029656480000-0x00000296564E2000-memory.dmp

Filesize
392KB

Download
memory/2256-91-0x00000296564E0000-0x0000029656502000-memory.dmp

Filesize
136KB

Download
memory/2256-92-0x0000029656A30000-0x0000029656F58000-memory.dmp

Filesize
5.2MB

Download
memory/2340-55-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2340-67-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3276-38-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3276-54-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3276-102-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3276-106-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3276-112-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/3276-114-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download