stealc | 6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779

Analysis

max time kernel
134s
max time network
136s
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 19:16

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe
Size

364KB
MD5

316070e5734654bcb72f94dcbb571964
SHA1

1e250a184d4950a4b6d5de59a021b5707228029c
SHA256

6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779
SHA512

262a573395641f5c108b157859e6f84e47f06abc3b9c9b2aa36e0406919cceed1147b6517e843160b04f05c9807719c1993b074f74f7021698dcfeeebed9d0ac
SSDEEP

6144:US0t5FW7l8UYZb1jNb41/6vpo+kveaeldhFeyf8rSYMOLcPZuBkT7YKkUT3fgP:US0nY7+5ao6DmlLhFerrSYMOEZuBkPTa

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/1256-68-0x000001597C530000-0x000001597FD64000-memory.dmp	family_zgrat_v1
behavioral2/memory/1256-73-0x000001591A6B0000-0x000001591A6D4000-memory.dmp	family_zgrat_v1
behavioral2/memory/1256-69-0x000001591A730000-0x000001591A83A000-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
3824	ug8.0.exe
2968	ug8.1.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
3048	584	WerFault.exe	78
4988	3824	WerFault.exe	81

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	ug8.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ug8.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	ug8.1.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	ug8.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ug8.0.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3824	ug8.0.exe
3824	ug8.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1256	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe
2968	ug8.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 3824	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	81
PID 584 wrote to memory of 3824	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	81
PID 584 wrote to memory of 3824	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	81
PID 584 wrote to memory of 2968	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	84
PID 584 wrote to memory of 2968	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	84
PID 584 wrote to memory of 2968	584	6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe	84
PID 2968 wrote to memory of 1256	2968	ug8.1.exe	89
PID 2968 wrote to memory of 1256	2968	ug8.1.exe	89

C:\Users\Admin\AppData\Local\Temp\6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe
"C:\Users\Admin\AppData\Local\Temp\6b884da94f0f3171f136dbee66dc0459f1db5851d181c756c6303e232ff96779.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:584
- C:\Users\Admin\AppData\Local\Temp\ug8.0.exe
  "C:\Users\Admin\AppData\Local\Temp\ug8.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3824
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 860
    3⤵
    - Program crash
    PID:4988
- C:\Users\Admin\AppData\Local\Temp\ug8.1.exe
  "C:\Users\Admin\AppData\Local\Temp\ug8.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2968
- - 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:1256
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 584 -s 1156
  2⤵
  - Program crash
  PID:3048

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 584 -ip 584
1⤵
PID:5000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 3824 -ip 3824
1⤵
PID:1624

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

Loading Replay Monitor...

Downloads

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

Filesize
2KB

MD5
eb2516b91af316cf9eb6a691f0e9efa8

SHA1
0df67db15ce4b7e73e062da4fae020f17517c225

SHA256
e22353c0b8fed0a6e8a2dacec5923d89ffb95231aa26c48dbc8fdb77474fef2b

SHA512
99cfdca16b15215f74f1ef748b4cbec9306571db73b7ee46b252233f38b156bbec3512a6857c52f64b155c4a0639f6f898433febcfed7b6fbf9eefe8928a126e

Download Submit
C:\Users\Admin\AppData\Local\Temp\ug8.0.exe

Filesize
223KB

MD5
eba29f456da60d82c13021441b3d7798

SHA1
d1a4fe3c8002d5be2393e5ae92892232d8e4a78e

SHA256
5edef454c9c9622255eb8616c5cb841f80cfe6cfc470f3ac2d46ca6ad0b64ff1

SHA512
f47e99c4926e261c134db7198b98abe138a79db12a88a6112fc34770a7cd01ad2c1cb1c4ca71bb5290d22ef4d8d17901583eb519633a823fdd94db1843e3461f

Download Submit
C:\Users\Admin\AppData\Local\Temp\ug8.1.exe

Filesize
2.1MB

MD5
0ef4e27e914de46c682cd3d6f564d1cf

SHA1
aa00eb2e895a80e1e5881d1b4618c844858ecb21

SHA256
c7be7abeb3504d7eb53fa89e99029bea1e715fa4b3964ac0c54a298af5781f75

SHA512
a6c94949b67dc653fefd6e9b9726307c18e91ced8aa82be950561383b75c5823d5241a65d68157a7249ea34923148b0b1f877d5137e3dc44bbe076fb920b63f9

Download Submit
memory/584-34-0x0000000003740000-0x00000000037AC000-memory.dmp

Filesize
432KB

Download
memory/584-2-0x0000000003740000-0x00000000037AC000-memory.dmp

Filesize
432KB

Download
memory/584-1-0x0000000001B50000-0x0000000001C50000-memory.dmp

Filesize
1024KB

Download
memory/584-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/584-35-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/584-33-0x0000000000400000-0x0000000001A25000-memory.dmp

Filesize
22.1MB

Download
memory/1256-76-0x000001591A9C0000-0x000001591AA72000-memory.dmp

Filesize
712KB

Download
memory/1256-74-0x000001591A6E0000-0x000001591A6EA000-memory.dmp

Filesize
40KB

Download
memory/1256-97-0x000001597FF40000-0x000001597FF5E000-memory.dmp

Filesize
120KB

Download
memory/1256-96-0x000001597FFC0000-0x0000015980036000-memory.dmp

Filesize
472KB

Download
memory/1256-85-0x000001597FD80000-0x000001597FD88000-memory.dmp

Filesize
32KB

Download
memory/1256-68-0x000001597C530000-0x000001597FD64000-memory.dmp

Filesize
56.2MB

Download
memory/1256-72-0x00000159004C0000-0x00000159004D4000-memory.dmp

Filesize
80KB

Download
memory/1256-73-0x000001591A6B0000-0x000001591A6D4000-memory.dmp

Filesize
144KB

Download
memory/1256-71-0x000001591A550000-0x000001591A55C000-memory.dmp

Filesize
48KB

Download
memory/1256-77-0x000001597FE80000-0x000001597FED0000-memory.dmp

Filesize
320KB

Download
memory/1256-78-0x000001597FED0000-0x000001597FEF2000-memory.dmp

Filesize
136KB

Download
memory/1256-86-0x000001597FF00000-0x000001597FF38000-memory.dmp

Filesize
224KB

Download
memory/1256-75-0x000001591A990000-0x000001591A9BA000-memory.dmp

Filesize
168KB

Download
memory/1256-79-0x00000159004A0000-0x00000159004AA000-memory.dmp

Filesize
40KB

Download
memory/1256-83-0x000001591AA70000-0x000001591AD70000-memory.dmp

Filesize
3.0MB

Download
memory/1256-95-0x000001591EEA0000-0x000001591EEAC000-memory.dmp

Filesize
48KB

Download
memory/1256-70-0x0000015900450000-0x0000015900460000-memory.dmp

Filesize
64KB

Download
memory/1256-69-0x000001591A730000-0x000001591A83A000-memory.dmp

Filesize
1.0MB

Download
memory/1256-88-0x000001597FE40000-0x000001597FE48000-memory.dmp

Filesize
32KB

Download
memory/1256-91-0x000001591EE80000-0x000001591EEA2000-memory.dmp

Filesize
136KB

Download
memory/1256-90-0x000001591F770000-0x000001591F7D2000-memory.dmp

Filesize
392KB

Download
memory/1256-92-0x000001591FD00000-0x0000015920228000-memory.dmp

Filesize
5.2MB

Download
memory/1256-89-0x000001591EE70000-0x000001591EE7A000-memory.dmp

Filesize
40KB

Download
memory/1256-87-0x000001597FE30000-0x000001597FE3E000-memory.dmp

Filesize
56KB

Download
memory/2968-67-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2968-52-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3824-14-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3824-13-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3824-56-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3824-101-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3824-103-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download
memory/3824-105-0x0000000000400000-0x0000000001A02000-memory.dmp

Filesize
22.0MB

Download