stealc | cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9

Analysis

max time kernel
141s
max time network
141s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
22-04-2024 23:21

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General

Target

cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe
Size

425KB
MD5

03f91cfb52d95a096ad2b211e49f9e76
SHA1

5f5680e1bfaa6b806c3be68536c7fd2c6089ca66
SHA256

cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9
SHA512

c5a8a3608b559574878ed96379010a35d695846ab24317d6938be70a4c1aa6aeb5505f27949e2ee64b6b5c95c829f18120c536cf9e3536a37dc49096cf668c20
SSDEEP

6144:Q5aN2Vntc5AZgFculbmTyNdviCkR0ybsQM4PJirrxGP1dY1Bu/fK:caNyqZKre/iL0ywQLBirrQNP/fK

Score

10^/10

stealc zgrat rat stealer

Malware Config

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/1004-88-0x000001CE0B7C0000-0x000001CE0F0B8000-memory.dmp	family_zgrat_v1
behavioral2/memory/1004-90-0x000001CE29950000-0x000001CE29A60000-memory.dmp	family_zgrat_v1
behavioral2/memory/1004-94-0x000001CE11050000-0x000001CE11074000-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 3 IoCs

pid	Process
4144	u1b4.0.exe
132	run.exe
3572	u1b4.3.exe

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
2460	4144	WerFault.exe	83
4664	1696	WerFault.exe	80

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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1b4.3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1b4.3.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1b4.3.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1004	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe
3572	u1b4.3.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
132	run.exe
132	run.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1696 wrote to memory of 4144	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	83
PID 1696 wrote to memory of 4144	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	83
PID 1696 wrote to memory of 4144	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	83
PID 1696 wrote to memory of 132	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	90
PID 1696 wrote to memory of 132	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	90
PID 1696 wrote to memory of 132	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	90
PID 1696 wrote to memory of 3572	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	91
PID 1696 wrote to memory of 3572	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	91
PID 1696 wrote to memory of 3572	1696	cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe	91
PID 3572 wrote to memory of 1004	3572	u1b4.3.exe	95
PID 3572 wrote to memory of 1004	3572	u1b4.3.exe	95

C:\Users\Admin\AppData\Local\Temp\cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe
"C:\Users\Admin\AppData\Local\Temp\cf51137fd01fbda379208b0f344dfebb6832454c69596b8fd39846fd833f04a9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Users\Admin\AppData\Local\Temp\u1b4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1b4.0.exe"
  2⤵
  - Executes dropped EXE
  PID:4144
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4144 -s 1320
    3⤵
    - Program crash
    PID:2460
- C:\Users\Admin\AppData\Local\Temp\u1b4.2\run.exe
  "C:\Users\Admin\AppData\Local\Temp\u1b4.2\run.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:132
- C:\Users\Admin\AppData\Local\Temp\u1b4.3.exe
  "C:\Users\Admin\AppData\Local\Temp\u1b4.3.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3572
- - 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:1004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1696 -s 1156
  2⤵
  - Program crash
  PID:4664

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4144 -ip 4144
1⤵
PID:4412

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1696 -ip 1696
1⤵
PID:3428

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
2KB

MD5
7116c8f7c23a2dcdf01c8fa449bb8e7e

SHA1
90d200ca5a5b6fe076802b27d0ba628af6cc8fba

SHA256
a12e69e3822e3cd55b42ca24dc0e4e9ef9e03c04fee94c4953cef40ca1fc3073

SHA512
ef17f57c01a424e76cb74019a3fac30f2e4dc9815f65a6761aef801ad1b8eb77bb435f4b0b3c979f6c87a93cbbee362cf13038f22366500aed42cb37d43157dc

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

Filesize
3KB

MD5
7a9088276dc56d30f931605f30f257e1

SHA1
02606caffa4e216724a128f6c30e4c4f1759266f

SHA256
3278395e51b973ed9abefb057a45e2e48e4c78b43be135098a3627d4d123b34b

SHA512
dfe7005ed5b5bcd1de6e11e668b7c56a84526c47c0810ff4fe125c2a93098444ab9a4ec87792b7b594821741a65e00f7375c08899e82803f3f0aa2ba102da001

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1b4.0.exe

Filesize
269KB

MD5
cbac14c597164fcb009195c0f69f1825

SHA1
78e86605711b599521fb44c83800cc770ab0d09b

SHA256
acc31b4538f0c0f8e16d30262762f5d8695fe6b18d9b3294f2176b0b960bbe09

SHA512
08c7133768ee149340cbfa074a41272a8dded0bab79d1e26ddf8ed152fa3fe75ac60fa7f9ac82f47c8751343ccf9b67dfd57b9dd07c9e12c4f925dac83015fa7

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1b4.2\UIxMarketPlugin.dll

Filesize
1.6MB

MD5
aaa68086149eb0a5b76c67e2a687b262

SHA1
63fcb9226a7d8489fb15f930c081347ddec58c25

SHA256
40e1b9e74963052d04e267185d7c03ac348416363ed2ce6e210a7550a285ff83

SHA512
6b5fd86426955db14793c057e5d6d5ba183262f903dbf307609da05e6a7b90a90801082844b270c8f7fb65985e67d53bf8c03245c55e62fcde1b0254921766a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1b4.2\relay.dll

Filesize
1.5MB

MD5
e2021d931fb1e423c18bf8d16b22228e

SHA1
9efb4c88cc7bf296a81b73425d91873b6fb98a9f

SHA256
ae8628900ff30d4a7c826137ee817bc7c6fdfbb4b00618e015bcb69a2f19bbb7

SHA512
7fdc66c9fa47199fc5d3f2886831adb67e0241431350ad813dfa0b7e17026477bc2d9c551a1a4e158dec6204d9e9124e1918954cd630136538cd6e52838b9a43

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1b4.2\run.exe

Filesize
2.4MB

MD5
817ea35f043d663cba3b81ee02880d34

SHA1
b6bbf7e8d53eb24fa2bfb7d3fb9410adbcfffd50

SHA256
18727c065a688f805813aef0e38ce040ae32deb6ec87116d70e696bca5d5da13

SHA512
69bbc00fcff0a4f0b17e96b72e711052dbfde4501a29365167ff3c16e70be14545c7a2ffc32bdc9377a3d1eb74d5d66d89313a9bf5bbca0b01a557d109f59c11

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1b4.3.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1004-113-0x000001CE2EA60000-0x000001CE2EA6A000-memory.dmp

Filesize
40KB

Download
memory/1004-100-0x000001CE29D40000-0x000001CE29DB6000-memory.dmp

Filesize
472KB

Download
memory/1004-129-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-128-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-127-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-126-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-125-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-124-0x00007FFCF67C0000-0x00007FFCF7282000-memory.dmp

Filesize
10.8MB

Download
memory/1004-122-0x000001CE2A510000-0x000001CE2A52E000-memory.dmp

Filesize
120KB

Download
memory/1004-121-0x000001CE2A4E0000-0x000001CE2A502000-memory.dmp

Filesize
136KB

Download
memory/1004-119-0x000001CE2A210000-0x000001CE2A260000-memory.dmp

Filesize
320KB

Download
memory/1004-120-0x000001CE2A1C0000-0x000001CE2A1CC000-memory.dmp

Filesize
48KB

Download
memory/1004-118-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-87-0x00007FFCF67C0000-0x00007FFCF7282000-memory.dmp

Filesize
10.8MB

Download
memory/1004-88-0x000001CE0B7C0000-0x000001CE0F0B8000-memory.dmp

Filesize
57.0MB

Download
memory/1004-89-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-90-0x000001CE29950000-0x000001CE29A60000-memory.dmp

Filesize
1.1MB

Download
memory/1004-92-0x000001CE10FF0000-0x000001CE10FFC000-memory.dmp

Filesize
48KB

Download
memory/1004-91-0x000001CE10FD0000-0x000001CE10FE0000-memory.dmp

Filesize
64KB

Download
memory/1004-93-0x000001CE10FE0000-0x000001CE10FF4000-memory.dmp

Filesize
80KB

Download
memory/1004-94-0x000001CE11050000-0x000001CE11074000-memory.dmp

Filesize
144KB

Download
memory/1004-95-0x000001CE11080000-0x000001CE1108A000-memory.dmp

Filesize
40KB

Download
memory/1004-96-0x000001CE29870000-0x000001CE2989A000-memory.dmp

Filesize
168KB

Download
memory/1004-97-0x000001CE29BB0000-0x000001CE29C62000-memory.dmp

Filesize
712KB

Download
memory/1004-98-0x000001CE298A0000-0x000001CE2991A000-memory.dmp

Filesize
488KB

Download
memory/1004-115-0x000001CE2EFA0000-0x000001CE2F4C8000-memory.dmp

Filesize
5.2MB

Download
memory/1004-99-0x000001CE29C60000-0x000001CE29CC2000-memory.dmp

Filesize
392KB

Download
memory/1004-101-0x000001CE10EB0000-0x000001CE10EBA000-memory.dmp

Filesize
40KB

Download
memory/1004-105-0x000001CE29DC0000-0x000001CE2A0C0000-memory.dmp

Filesize
3.0MB

Download
memory/1004-108-0x000001CE2E180000-0x000001CE2E188000-memory.dmp

Filesize
32KB

Download
memory/1004-107-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-110-0x000001CE2E100000-0x000001CE2E138000-memory.dmp

Filesize
224KB

Download
memory/1004-111-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-112-0x000001CE2E0D0000-0x000001CE2E0DE000-memory.dmp

Filesize
56KB

Download
memory/1004-109-0x000001CE0F4C0000-0x000001CE0F4D0000-memory.dmp

Filesize
64KB

Download
memory/1004-114-0x000001CE2E7E0000-0x000001CE2E802000-memory.dmp

Filesize
136KB

Download
memory/1696-54-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/1696-2-0x0000000003250000-0x00000000032C2000-memory.dmp

Filesize
456KB

Download
memory/1696-3-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/1696-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/1696-48-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/1696-37-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/3572-86-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3572-74-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3572-49-0x0000000000B80000-0x0000000000B81000-memory.dmp

Filesize
4KB

Download
memory/4144-15-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/4144-13-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

Filesize
1024KB

Download
memory/4144-36-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/4144-14-0x00000000030C0000-0x00000000030E7000-memory.dmp

Filesize
156KB

Download