stealc | d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697

Analysis

max time kernel
129s
max time network
130s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
08-05-2024 20:08

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General

Target

d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe
Size

364KB
MD5

164928a82210574dbb33128a7416e69a
SHA1

5483ed912d256abad4c51dfac3c6bd5417e5102d
SHA256

d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697
SHA512

0900ddb9cc6e8d2f2c5a9c2432c053c8120668314e0c9a15808718c27cee987fd83b647c280995a6bebbe7c79d7e2d9f1ae72e15be4f09f723fc7aa9dc777b41
SSDEEP

6144:9HjGRWK3W3yK7lKM6FBEwOaIbJp4U/BKfL/z22v2qDx6Anq4Ndy3YTDXgI:9DGEK3WiK7UMCbm6bfVDxrntTDXgI

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/3040-66-0x000001D59EE50000-0x000001D5A2684000-memory.dmp	family_zgrat_v1
behavioral2/memory/3040-67-0x000001D5BCE20000-0x000001D5BCF2A000-memory.dmp	family_zgrat_v1
behavioral2/memory/3040-71-0x000001D5BCCE0000-0x000001D5BCD04000-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
1948	u3pw.0.exe
904	u3pw.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
2104	4820	WerFault.exe	80
128	1948	WerFault.exe	83

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	u3pw.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3pw.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3pw.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	u3pw.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u3pw.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1948	u3pw.0.exe
1948	u3pw.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe
904	u3pw.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 1948	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	83
PID 4820 wrote to memory of 1948	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	83
PID 4820 wrote to memory of 1948	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	83
PID 4820 wrote to memory of 904	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	86
PID 4820 wrote to memory of 904	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	86
PID 4820 wrote to memory of 904	4820	d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe	86
PID 904 wrote to memory of 3040	904	u3pw.1.exe	91
PID 904 wrote to memory of 3040	904	u3pw.1.exe	91

C:\Users\Admin\AppData\Local\Temp\d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe
"C:\Users\Admin\AppData\Local\Temp\d9c1e5df5baf1833a72a9591ab685d65c9e985563d791e27d5c4e4afeb672697.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\u3pw.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u3pw.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1948
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1948 -s 860
    3⤵
    - Program crash
    PID:128
- C:\Users\Admin\AppData\Local\Temp\u3pw.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u3pw.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:904
- - 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:3040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4820 -s 1408
  2⤵
  - Program crash
  PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4820 -ip 4820
1⤵
PID:2952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1948 -ip 1948
1⤵
PID:3972

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

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Downloads

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

Filesize
3KB

MD5
def2fb824a31707342bb49ad5fed05da

SHA1
3b3de4b69bf8b37f6bc27b8cc9d10248e83499f8

SHA256
0f83ee0db2daef89daa92990b59d0d2b65a908fce3e3294b1be28f18711e6dc7

SHA512
4abb86606821aaba130f8c6bdb66d3951ede6ac38bf89015c5ccbbcae52fa95967edbaad96dc00585a70ecc768522a317d31d76cb98d30d162bc0fa725e15dc2

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3pw.0.exe

Filesize
223KB

MD5
280229b137b0f36f2b18b9bc7841995d

SHA1
d800c8ecc758ccacfe9a91efd45904efcc17b84a

SHA256
49533fc0ca008e430d35fdabab4b200a70e629e62f5b16f9157b5a82b6494536

SHA512
aeb7566ad83b6b1a01e2d8f6e557a18a75a8bd4229f72cc9e1b1ffe9dd86d14469937eea221e0d436274d4444d4f1732098b98ca3ddc3c7aec65867107fbdec5

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3pw.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/904-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/904-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1948-104-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/1948-102-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/1948-13-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/1948-24-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/1948-100-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/1948-97-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/3040-74-0x000001D5BD0E0000-0x000001D5BD192000-memory.dmp

Filesize
712KB

Download
memory/3040-83-0x000001D5C1CA0000-0x000001D5C1CA8000-memory.dmp

Filesize
32KB

Download
memory/3040-66-0x000001D59EE50000-0x000001D5A2684000-memory.dmp

Filesize
56.2MB

Download
memory/3040-67-0x000001D5BCE20000-0x000001D5BCF2A000-memory.dmp

Filesize
1.0MB

Download
memory/3040-70-0x000001D5A4400000-0x000001D5A4414000-memory.dmp

Filesize
80KB

Download
memory/3040-71-0x000001D5BCCE0000-0x000001D5BCD04000-memory.dmp

Filesize
144KB

Download
memory/3040-69-0x000001D5BCC80000-0x000001D5BCC8C000-memory.dmp

Filesize
48KB

Download
memory/3040-68-0x000001D5A2CD0000-0x000001D5A2CE0000-memory.dmp

Filesize
64KB

Download
memory/3040-72-0x000001D5BD080000-0x000001D5BD08A000-memory.dmp

Filesize
40KB

Download
memory/3040-95-0x000001D5C1D30000-0x000001D5C1D4E000-memory.dmp

Filesize
120KB

Download
memory/3040-75-0x000001D5BD1E0000-0x000001D5BD230000-memory.dmp

Filesize
320KB

Download
memory/3040-73-0x000001D5BD0A0000-0x000001D5BD0CA000-memory.dmp

Filesize
168KB

Download
memory/3040-76-0x000001D5BD230000-0x000001D5BD252000-memory.dmp

Filesize
136KB

Download
memory/3040-81-0x000001D5BD260000-0x000001D5BD560000-memory.dmp

Filesize
3.0MB

Download
memory/3040-77-0x000001D5BCC60000-0x000001D5BCC6A000-memory.dmp

Filesize
40KB

Download
memory/3040-94-0x000001D5C1DD0000-0x000001D5C1E46000-memory.dmp

Filesize
472KB

Download
memory/3040-85-0x000001D5C15B0000-0x000001D5C15BE000-memory.dmp

Filesize
56KB

Download
memory/3040-84-0x000001D5C15E0000-0x000001D5C1618000-memory.dmp

Filesize
224KB

Download
memory/3040-86-0x000001D5C15D0000-0x000001D5C15D8000-memory.dmp

Filesize
32KB

Download
memory/3040-89-0x000001D5C1CD0000-0x000001D5C1CF2000-memory.dmp

Filesize
136KB

Download
memory/3040-88-0x000001D5C1F70000-0x000001D5C1FD2000-memory.dmp

Filesize
392KB

Download
memory/3040-87-0x000001D5C1F50000-0x000001D5C1F5A000-memory.dmp

Filesize
40KB

Download
memory/3040-90-0x000001D5C2500000-0x000001D5C2A28000-memory.dmp

Filesize
5.2MB

Download
memory/3040-93-0x000001D5C1CF0000-0x000001D5C1CFC000-memory.dmp

Filesize
48KB

Download
memory/4820-33-0x0000000000400000-0x0000000002597000-memory.dmp

Filesize
33.6MB

Download
memory/4820-1-0x00000000027C0000-0x00000000028C0000-memory.dmp

Filesize
1024KB

Download
memory/4820-34-0x00000000042B0000-0x000000000431C000-memory.dmp

Filesize
432KB

Download
memory/4820-35-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4820-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4820-2-0x00000000042B0000-0x000000000431C000-memory.dmp

Filesize
432KB

Download