stealc | 200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 23:45

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General

Target

200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe
Size

426KB
MD5

b77425295d31a3b4eb879d171ec20712
SHA1

d8f5a4bb4c1a74c4e53ca0d159977e545041fe48
SHA256

200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f
SHA512

013d5ba7ceed098834b07f8fad14add507e4b6bacf988a721dbab5f6c4b664be7211fbde350da9c6c83b2002dcd3572b51a634e6c104d1831fa7a795a9912246
SSDEEP

6144:noJn25SYjZ+SbVduVe3BJ33kXkLRrKFfVASAt25lKgH/fI:oJ25vZpbVdnBJ33YkifV8/gH/fI

Score

10^/10

stealc zgrat rat stealer

Malware Config

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/1404-90-0x0000018A6F8B0000-0x0000018A731A8000-memory.dmp	family_zgrat_v1
behavioral1/memory/1404-92-0x0000018A75A70000-0x0000018A75B80000-memory.dmp	family_zgrat_v1
behavioral1/memory/1404-96-0x0000018A75890000-0x0000018A758B4000-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

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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	u3fk.3.exe

Executes dropped EXE 3 IoCs

pid	Process
4604	u3fk.0.exe
4036	run.exe
4708	u3fk.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
3076	4604	WerFault.exe	92
4464	4448	WerFault.exe	85

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	u3fk.3.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3fk.3.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u3fk.3.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1404	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe
4708	u3fk.3.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4036	run.exe
4036	run.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4448 wrote to memory of 4604	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	92
PID 4448 wrote to memory of 4604	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	92
PID 4448 wrote to memory of 4604	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	92
PID 4448 wrote to memory of 4036	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	100
PID 4448 wrote to memory of 4036	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	100
PID 4448 wrote to memory of 4036	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	100
PID 4448 wrote to memory of 4708	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	105
PID 4448 wrote to memory of 4708	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	105
PID 4448 wrote to memory of 4708	4448	200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe	105
PID 4708 wrote to memory of 1404	4708	u3fk.3.exe	110
PID 4708 wrote to memory of 1404	4708	u3fk.3.exe	110

C:\Users\Admin\AppData\Local\Temp\200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe
"C:\Users\Admin\AppData\Local\Temp\200bba2e0541aa944dac193a8fc5457a4a914f3dab0c995df15ad8718cb2db0f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4448
- C:\Users\Admin\AppData\Local\Temp\u3fk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u3fk.0.exe"
  2⤵
  - Executes dropped EXE
  PID:4604
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4604 -s 1320
    3⤵
    - Program crash
    PID:3076
- C:\Users\Admin\AppData\Local\Temp\u3fk.2\run.exe
  "C:\Users\Admin\AppData\Local\Temp\u3fk.2\run.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:4036
- C:\Users\Admin\AppData\Local\Temp\u3fk.3.exe
  "C:\Users\Admin\AppData\Local\Temp\u3fk.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:4708
- - 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:1404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4448 -s 1144
  2⤵
  - Program crash
  PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4604 -ip 4604
1⤵
PID:2920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 4448 -ip 4448
1⤵
PID:552

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\u3fk.0.exe

Filesize
269KB

MD5
ab93257c8b0667a90a82175e38e0d73f

SHA1
efc64a07aa30e5e2937d7488e704d2c8f7a20426

SHA256
d9e78244f17da4830346f1234d6b0a7af117e73df0ae7fc999bad112d8fb848b

SHA512
e27d7bab62bd15d232f2a489a7f8b263a2336b3297d6bf4c5afa551add9bd56141c337edccdd79703d82d2fd2e978967e8dc1b026cfe1ab0a3997133536c11f1

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3fk.2\UIxMarketPlugin.dll

Filesize
1.6MB

MD5
aaa68086149eb0a5b76c67e2a687b262

SHA1
63fcb9226a7d8489fb15f930c081347ddec58c25

SHA256
40e1b9e74963052d04e267185d7c03ac348416363ed2ce6e210a7550a285ff83

SHA512
6b5fd86426955db14793c057e5d6d5ba183262f903dbf307609da05e6a7b90a90801082844b270c8f7fb65985e67d53bf8c03245c55e62fcde1b0254921766a8

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3fk.2\relay.dll

Filesize
1.5MB

MD5
e2021d931fb1e423c18bf8d16b22228e

SHA1
9efb4c88cc7bf296a81b73425d91873b6fb98a9f

SHA256
ae8628900ff30d4a7c826137ee817bc7c6fdfbb4b00618e015bcb69a2f19bbb7

SHA512
7fdc66c9fa47199fc5d3f2886831adb67e0241431350ad813dfa0b7e17026477bc2d9c551a1a4e158dec6204d9e9124e1918954cd630136538cd6e52838b9a43

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3fk.2\run.exe

Filesize
2.4MB

MD5
817ea35f043d663cba3b81ee02880d34

SHA1
b6bbf7e8d53eb24fa2bfb7d3fb9410adbcfffd50

SHA256
18727c065a688f805813aef0e38ce040ae32deb6ec87116d70e696bca5d5da13

SHA512
69bbc00fcff0a4f0b17e96b72e711052dbfde4501a29365167ff3c16e70be14545c7a2ffc32bdc9377a3d1eb74d5d66d89313a9bf5bbca0b01a557d109f59c11

Download Submit
C:\Users\Admin\AppData\Local\Temp\u3fk.3.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1404-113-0x0000018A7A230000-0x0000018A7A268000-memory.dmp

Filesize
224KB

Download
memory/1404-123-0x0000018A7B1D0000-0x0000018A7B1EE000-memory.dmp

Filesize
120KB

Download
memory/1404-129-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-100-0x0000018A75D70000-0x0000018A75DEA000-memory.dmp

Filesize
488KB

Download
memory/1404-127-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-126-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-125-0x00007FFB95780000-0x00007FFB96241000-memory.dmp

Filesize
10.8MB

Download
memory/1404-99-0x0000018A75CC0000-0x0000018A75D72000-memory.dmp

Filesize
712KB

Download
memory/1404-122-0x0000018A7B1A0000-0x0000018A7B1C2000-memory.dmp

Filesize
136KB

Download
memory/1404-120-0x0000018A7B150000-0x0000018A7B1A0000-memory.dmp

Filesize
320KB

Download
memory/1404-121-0x0000018A7B100000-0x0000018A7B10C000-memory.dmp

Filesize
48KB

Download
memory/1404-117-0x0000018A7B8E0000-0x0000018A7BE08000-memory.dmp

Filesize
5.2MB

Download
memory/1404-89-0x00007FFB95780000-0x00007FFB96241000-memory.dmp

Filesize
10.8MB

Download
memory/1404-116-0x0000018A7B390000-0x0000018A7B3B2000-memory.dmp

Filesize
136KB

Download
memory/1404-90-0x0000018A6F8B0000-0x0000018A731A8000-memory.dmp

Filesize
57.0MB

Download
memory/1404-91-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-94-0x0000018A74F60000-0x0000018A74F6C000-memory.dmp

Filesize
48KB

Download
memory/1404-93-0x0000018A73610000-0x0000018A73620000-memory.dmp

Filesize
64KB

Download
memory/1404-92-0x0000018A75A70000-0x0000018A75B80000-memory.dmp

Filesize
1.1MB

Download
memory/1404-95-0x0000018A73620000-0x0000018A73634000-memory.dmp

Filesize
80KB

Download
memory/1404-96-0x0000018A75890000-0x0000018A758B4000-memory.dmp

Filesize
144KB

Download
memory/1404-101-0x0000018A75DF0000-0x0000018A75E52000-memory.dmp

Filesize
392KB

Download
memory/1404-128-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-115-0x0000018A7B380000-0x0000018A7B38A000-memory.dmp

Filesize
40KB

Download
memory/1404-103-0x0000018A758B0000-0x0000018A758BA000-memory.dmp

Filesize
40KB

Download
memory/1404-98-0x0000018A758C0000-0x0000018A758EA000-memory.dmp

Filesize
168KB

Download
memory/1404-97-0x0000018A74F70000-0x0000018A74F7A000-memory.dmp

Filesize
40KB

Download
memory/1404-102-0x0000018A75ED0000-0x0000018A75F46000-memory.dmp

Filesize
472KB

Download
memory/1404-107-0x0000018A75F50000-0x0000018A76250000-memory.dmp

Filesize
3.0MB

Download
memory/1404-109-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-110-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-112-0x0000018A75EC0000-0x0000018A75EC8000-memory.dmp

Filesize
32KB

Download
memory/1404-111-0x0000018A75780000-0x0000018A75790000-memory.dmp

Filesize
64KB

Download
memory/1404-114-0x0000018A7A200000-0x0000018A7A20E000-memory.dmp

Filesize
56KB

Download
memory/4448-38-0x0000000002FC0000-0x00000000030C0000-memory.dmp

Filesize
1024KB

Download
memory/4448-1-0x0000000002FC0000-0x00000000030C0000-memory.dmp

Filesize
1024KB

Download
memory/4448-50-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/4448-37-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/4448-2-0x0000000002EE0000-0x0000000002F52000-memory.dmp

Filesize
456KB

Download
memory/4448-3-0x0000000000400000-0x0000000002C4D000-memory.dmp

Filesize
40.3MB

Download
memory/4604-15-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/4604-36-0x0000000000400000-0x0000000002C26000-memory.dmp

Filesize
40.1MB

Download
memory/4604-13-0x0000000002CC0000-0x0000000002DC0000-memory.dmp

Filesize
1024KB

Download
memory/4604-14-0x0000000002DC0000-0x0000000002DE7000-memory.dmp

Filesize
156KB

Download
memory/4708-88-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4708-76-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4708-53-0x00000000026A0000-0x00000000026A1000-memory.dmp

Filesize
4KB

Download