stealc | 553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521

Analysis

max time kernel
145s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 01:28

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General

Target

553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe
Size

425KB
MD5

809d01b41db7759e37fcbdcc7b12f924
SHA1

d25989473ba57ccdcad24579252510ef1c4a3351
SHA256

553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521
SHA512

7282bbe7ce14659db70eb3396e2efc99bd41da965bbd30c9aa5888c534eff76f6a0c3be21542730d04ea803155eb92378ab5e6dd525b9ebab6f4d01d76ac7395
SSDEEP

6144:Q5aN2Vntc5AZgFculbmTyNdviCkR0ybsQM4PJirrxGP1dY1Bu/fF:caNyqZKre/iL0ywQLBirrQNP/fF

Score

10^/10

stealc zgrat rat stealer

Malware Config

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/1444-97-0x00000246F6F60000-0x00000246FA858000-memory.dmp	family_zgrat_v1
behavioral2/memory/1444-99-0x00000246FD040000-0x00000246FD150000-memory.dmp	family_zgrat_v1
behavioral2/memory/1444-103-0x00000246FD160000-0x00000246FD184000-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

Detects encrypted or obfuscated .NET executables 1 IoCs

resource	yara_rule
behavioral2/memory/1444-97-0x00000246F6F60000-0x00000246FA858000-memory.dmp	INDICATOR_EXE_DotNET_Encrypted

Downloads MZ/PE file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	u2ac.3.exe

Executes dropped EXE 3 IoCs

pid	Process
3076	u2ac.0.exe
2200	run.exe
2216	u2ac.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
4664	3076	WerFault.exe	90
4928	2964	WerFault.exe	89

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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2ac.3.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2ac.3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2ac.3.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1444	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe
2216	u2ac.3.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2200	run.exe
2200	run.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 3076	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	90
PID 2964 wrote to memory of 3076	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	90
PID 2964 wrote to memory of 3076	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	90
PID 2964 wrote to memory of 2200	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	95
PID 2964 wrote to memory of 2200	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	95
PID 2964 wrote to memory of 2200	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	95
PID 2964 wrote to memory of 2216	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	102
PID 2964 wrote to memory of 2216	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	102
PID 2964 wrote to memory of 2216	2964	553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe	102
PID 2216 wrote to memory of 1444	2216	u2ac.3.exe	110
PID 2216 wrote to memory of 1444	2216	u2ac.3.exe	110

C:\Users\Admin\AppData\Local\Temp\553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe
"C:\Users\Admin\AppData\Local\Temp\553ad97838dd7b357b5da543905b2abccd26e8d28d2a9557a0e3e443e4122521.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\u2ac.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2ac.0.exe"
  2⤵
  - Executes dropped EXE
  PID:3076
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3076 -s 1280
    3⤵
    - Program crash
    PID:4664
- C:\Users\Admin\AppData\Local\Temp\u2ac.2\run.exe
  "C:\Users\Admin\AppData\Local\Temp\u2ac.2\run.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:2200
- C:\Users\Admin\AppData\Local\Temp\u2ac.3.exe
  "C:\Users\Admin\AppData\Local\Temp\u2ac.3.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2216
- - 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:1444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 1608
  2⤵
  - Program crash
  PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3076 -ip 3076
1⤵
PID:4724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2964 -ip 2964
1⤵
PID:4968

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1352 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
1⤵
PID:4904

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\u2ac.0.exe

Filesize
332KB

MD5
26ba5a3f20217ea453fa739aa7b13c9f

SHA1
6075d1e29f4b422334ae6442e73a7f33998e53e2

SHA256
48a7ce8f64cfd13089d7b33f663f9729369b5c2c2f82923c329314141bd045c1

SHA512
cdad3d3c8a6a6590b99aa44c0ccca99fba82cf2e12ea526d18fef15d88f538b8bccd8688d8c34ab78872de0ed3006c8299fb798d17ff8e70e114385d7ccb5e0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2ac.2\UIxMarketPlugin.dll

Filesize
1.6MB

MD5
aaa68086149eb0a5b76c67e2a687b262

SHA1
63fcb9226a7d8489fb15f930c081347ddec58c25

SHA256
40e1b9e74963052d04e267185d7c03ac348416363ed2ce6e210a7550a285ff83

SHA512
6b5fd86426955db14793c057e5d6d5ba183262f903dbf307609da05e6a7b90a90801082844b270c8f7fb65985e67d53bf8c03245c55e62fcde1b0254921766a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2ac.2\relay.dll

Filesize
1.5MB

MD5
e2021d931fb1e423c18bf8d16b22228e

SHA1
9efb4c88cc7bf296a81b73425d91873b6fb98a9f

SHA256
ae8628900ff30d4a7c826137ee817bc7c6fdfbb4b00618e015bcb69a2f19bbb7

SHA512
7fdc66c9fa47199fc5d3f2886831adb67e0241431350ad813dfa0b7e17026477bc2d9c551a1a4e158dec6204d9e9124e1918954cd630136538cd6e52838b9a43

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2ac.2\run.exe

Filesize
2.4MB

MD5
817ea35f043d663cba3b81ee02880d34

SHA1
b6bbf7e8d53eb24fa2bfb7d3fb9410adbcfffd50

SHA256
18727c065a688f805813aef0e38ce040ae32deb6ec87116d70e696bca5d5da13

SHA512
69bbc00fcff0a4f0b17e96b72e711052dbfde4501a29365167ff3c16e70be14545c7a2ffc32bdc9377a3d1eb74d5d66d89313a9bf5bbca0b01a557d109f59c11

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2ac.3.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1444-119-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-98-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-137-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-136-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-135-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-132-0x00000246FF920000-0x00000246FF93E000-memory.dmp

Filesize
120KB

Download
memory/1444-104-0x00000246FD2D0000-0x00000246FD2DA000-memory.dmp

Filesize
40KB

Download
memory/1444-131-0x000002469ADE0000-0x000002469AE10000-memory.dmp

Filesize
192KB

Download
memory/1444-130-0x00000246FF8F0000-0x00000246FF912000-memory.dmp

Filesize
136KB

Download
memory/1444-128-0x00000246FFD50000-0x00000246FFDA0000-memory.dmp

Filesize
320KB

Download
memory/1444-129-0x000002469A2C0000-0x000002469A2CC000-memory.dmp

Filesize
48KB

Download
memory/1444-107-0x00000246FD3D0000-0x00000246FD44A000-memory.dmp

Filesize
488KB

Download
memory/1444-125-0x000002469B310000-0x000002469B838000-memory.dmp

Filesize
5.2MB

Download
memory/1444-124-0x000002469A2E0000-0x000002469A302000-memory.dmp

Filesize
136KB

Download
memory/1444-123-0x000002469A2A0000-0x000002469A2AA000-memory.dmp

Filesize
40KB

Download
memory/1444-96-0x00007FFEAA910000-0x00007FFEAB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/1444-97-0x00000246F6F60000-0x00000246FA858000-memory.dmp

Filesize
57.0MB

Download
memory/1444-117-0x00007FFEAA910000-0x00007FFEAB3D1000-memory.dmp

Filesize
10.8MB

Download
memory/1444-99-0x00000246FD040000-0x00000246FD150000-memory.dmp

Filesize
1.1MB

Download
memory/1444-101-0x00000246FCFE0000-0x00000246FCFEC000-memory.dmp

Filesize
48KB

Download
memory/1444-105-0x00000246FD2F0000-0x00000246FD31A000-memory.dmp

Filesize
168KB

Download
memory/1444-102-0x00000246FCFD0000-0x00000246FCFE4000-memory.dmp

Filesize
80KB

Download
memory/1444-103-0x00000246FD160000-0x00000246FD184000-memory.dmp

Filesize
144KB

Download
memory/1444-106-0x00000246FD320000-0x00000246FD3D2000-memory.dmp

Filesize
712KB

Download
memory/1444-100-0x00000246FC4F0000-0x00000246FC500000-memory.dmp

Filesize
64KB

Download
memory/1444-121-0x00000246FF8B0000-0x00000246FF8E8000-memory.dmp

Filesize
224KB

Download
memory/1444-122-0x00000246FF870000-0x00000246FF87E000-memory.dmp

Filesize
56KB

Download
memory/1444-108-0x00000246FD450000-0x00000246FD4B2000-memory.dmp

Filesize
392KB

Download
memory/1444-109-0x00000246FD530000-0x00000246FD5A6000-memory.dmp

Filesize
472KB

Download
memory/1444-110-0x00000246FC4D0000-0x00000246FC4DA000-memory.dmp

Filesize
40KB

Download
memory/1444-114-0x00000246FD5B0000-0x00000246FD8B0000-memory.dmp

Filesize
3.0MB

Download
memory/1444-116-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-118-0x00000246FAC00000-0x00000246FAC10000-memory.dmp

Filesize
64KB

Download
memory/1444-120-0x00000246FF860000-0x00000246FF868000-memory.dmp

Filesize
32KB

Download
memory/2216-92-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2216-95-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2216-56-0x00000000026B0000-0x00000000026B1000-memory.dmp

Filesize
4KB

Download
memory/2216-82-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2964-61-0x0000000002DE0000-0x0000000002E52000-memory.dmp

Filesize
456KB

Download
memory/2964-43-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/2964-1-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

Filesize
1024KB

Download
memory/2964-59-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/2964-55-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

Filesize
1024KB

Download
memory/2964-2-0x0000000002DE0000-0x0000000002E52000-memory.dmp

Filesize
456KB

Download
memory/2964-3-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/2964-4-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/3076-20-0x0000000004290000-0x0000000004390000-memory.dmp

Filesize
1024KB

Download
memory/3076-42-0x0000000000400000-0x0000000004044000-memory.dmp

Filesize
60.3MB

Download
memory/3076-21-0x00000000040D0000-0x00000000040F7000-memory.dmp

Filesize
156KB

Download