stealc | 6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69

Analysis

max time kernel
146s
max time network
150s
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, 19:34

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General

Target

6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe
Size

384KB
MD5

94717be21e4d4d18fe3f51fa48de7d60
SHA1

4d2e5a3d275f44583544a4ccce229f39857d45d6
SHA256

6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69
SHA512

6fdbc21cb22171ce851c2b90be292ec1a43ac691b56fc850cad9488d918e434ae09574b1b707617023f1305eaab5db6cfbb5160639e357848a71ce808c3a8253
SSDEEP

6144:2nNm4Za4Cv1GOuLzYI0dBXV9TCS/lMEGFZCTiQJ0s1:2nNNZg1GOuL5SV9TNyEGFTQP1

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/4076-65-0x0000029AD9730000-0x0000029ADCF64000-memory.dmp	family_zgrat_v1
behavioral2/memory/4076-66-0x0000029AF7730000-0x0000029AF783A000-memory.dmp	family_zgrat_v1
behavioral2/memory/4076-70-0x0000029AF7680000-0x0000029AF76A4000-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
4976	u2c0.0.exe
3556	u2c0.1.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
1072	3024	WerFault.exe	76
3592	4976	WerFault.exe	77

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	u2c0.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2c0.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2c0.1.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2c0.0.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	u2c0.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4976	u2c0.0.exe
4976	u2c0.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4076	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe
3556	u2c0.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 4976	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	77
PID 3024 wrote to memory of 4976	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	77
PID 3024 wrote to memory of 4976	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	77
PID 3024 wrote to memory of 3556	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	80
PID 3024 wrote to memory of 3556	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	80
PID 3024 wrote to memory of 3556	3024	6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe	80
PID 3556 wrote to memory of 4076	3556	u2c0.1.exe	85
PID 3556 wrote to memory of 4076	3556	u2c0.1.exe	85

C:\Users\Admin\AppData\Local\Temp\6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe
"C:\Users\Admin\AppData\Local\Temp\6416db03471d49e17830df7261e0789ddf68947fdbc7c12218032d2e89994a69.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\u2c0.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2c0.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4976
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4976 -s 1168
    3⤵
    - Program crash
    PID:3592
- C:\Users\Admin\AppData\Local\Temp\u2c0.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2c0.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3556
- - 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:4076
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3024 -s 1164
  2⤵
  - Program crash
  PID:1072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3024 -ip 3024
1⤵
PID:1100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4976 -ip 4976
1⤵
PID:3432

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

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Downloads

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

Filesize
3KB

MD5
6b80d2c6dc600985efb54d0eec7f83c3

SHA1
ee2bc80cd07dfaa5e27cc421e1899543e6ce4720

SHA256
113250aabe3b5a11dfb6f3ebe68ae835dbfacb45145bd17d1a4d5a0645453ac9

SHA512
a81488388cbbc68028b7013e2ec86d281be4aa1650fd05c296f9fe662fb2817c61c5f256e9165ef563f9429499e6234122550a90841667c4da4b1b38609add73

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2c0.0.exe

Filesize
206KB

MD5
0917be53327ea132956255dcab650a82

SHA1
b60818917f645a8a9af3b530e3ae37c1f002be2f

SHA256
211c34660898480e0777c6ef6f61bf2111f6550e00b40cab859543d567dc455a

SHA512
a72acc24ba813d983bbf2ecab7929d0aab4e25637ae43e85b973a5105429bd15c061415fd855737620caaf81b456b2d6ba57f85566245efbe5f8b5db5560932a

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2c0.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/3024-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3024-2-0x0000000004890000-0x00000000048FC000-memory.dmp

Filesize
432KB

Download
memory/3024-1-0x0000000002DF0000-0x0000000002EF0000-memory.dmp

Filesize
1024KB

Download
memory/3024-16-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/3024-32-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3024-31-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/3556-53-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3556-64-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4076-74-0x0000029AF7AC0000-0x0000029AF7B10000-memory.dmp

Filesize
320KB

Download
memory/4076-83-0x0000029AFBEC0000-0x0000029AFBEF8000-memory.dmp

Filesize
224KB

Download
memory/4076-68-0x0000029AF7620000-0x0000029AF762C000-memory.dmp

Filesize
48KB

Download
memory/4076-67-0x0000029AF73E0000-0x0000029AF73F0000-memory.dmp

Filesize
64KB

Download
memory/4076-69-0x0000029AF7600000-0x0000029AF7614000-memory.dmp

Filesize
80KB

Download
memory/4076-70-0x0000029AF7680000-0x0000029AF76A4000-memory.dmp

Filesize
144KB

Download
memory/4076-71-0x0000029AF76B0000-0x0000029AF76BA000-memory.dmp

Filesize
40KB

Download
memory/4076-73-0x0000029AF7A40000-0x0000029AF7A6A000-memory.dmp

Filesize
168KB

Download
memory/4076-72-0x0000029AF7990000-0x0000029AF7A42000-memory.dmp

Filesize
712KB

Download
memory/4076-65-0x0000029AD9730000-0x0000029ADCF64000-memory.dmp

Filesize
56.2MB

Download
memory/4076-75-0x0000029AF7B10000-0x0000029AF7B32000-memory.dmp

Filesize
136KB

Download
memory/4076-80-0x0000029AF7B40000-0x0000029AF7E40000-memory.dmp

Filesize
3.0MB

Download
memory/4076-76-0x0000029AF76C0000-0x0000029AF76CA000-memory.dmp

Filesize
40KB

Download
memory/4076-82-0x0000029AFC580000-0x0000029AFC588000-memory.dmp

Filesize
32KB

Download
memory/4076-84-0x0000029AFBE90000-0x0000029AFBE9E000-memory.dmp

Filesize
56KB

Download
memory/4076-66-0x0000029AF7730000-0x0000029AF783A000-memory.dmp

Filesize
1.0MB

Download
memory/4076-85-0x0000029AFBEB0000-0x0000029AFBEB8000-memory.dmp

Filesize
32KB

Download
memory/4076-86-0x0000029AFC830000-0x0000029AFC83A000-memory.dmp

Filesize
40KB

Download
memory/4076-88-0x0000029AFC8B0000-0x0000029AFC8D2000-memory.dmp

Filesize
136KB

Download
memory/4076-87-0x0000029AFC850000-0x0000029AFC8B2000-memory.dmp

Filesize
392KB

Download
memory/4076-89-0x0000029AFCE00000-0x0000029AFD328000-memory.dmp

Filesize
5.2MB

Download
memory/4076-92-0x0000029AFC5B0000-0x0000029AFC5BC000-memory.dmp

Filesize
48KB

Download
memory/4076-93-0x0000029AFC690000-0x0000029AFC706000-memory.dmp

Filesize
472KB

Download
memory/4076-95-0x0000029AFC5F0000-0x0000029AFC60E000-memory.dmp

Filesize
120KB

Download
memory/4976-94-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/4976-97-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/4976-99-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/4976-102-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/4976-104-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download
memory/4976-106-0x0000000000400000-0x0000000002AF1000-memory.dmp

Filesize
38.9MB

Download