stealc | 73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771

General

Target

73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
Size

372KB
MD5

9f712ea5a04bfae2238764f668305642
SHA1

864debdeec4d00430661070fc1dab479cfc8a6ef
SHA256

73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771
SHA512

25ff360b96fd99abf9e0a6afbd489e3efdf76685b246384cd61ab692a828a1ee7cc508afd95273c10b45c5b7d358bee142a860b134f75375358045bf3b1363d3
SSDEEP

6144:pl+08UGGfdzF7qxvwcB793ituNKkzXwGZTapV:p808UGgdtqrhauN3XwwapV

Score

10^/10

stealc zgrat discovery rat stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral1/memory/2776-71-0x0000000000940000-0x0000000004174000-memory.dmp	family_zgrat_v1
behavioral1/memory/2776-72-0x000000001EE30000-0x000000001EF3A000-memory.dmp	family_zgrat_v1
behavioral1/memory/2776-76-0x0000000005C00000-0x0000000005C24000-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
2488	urk.0.exe
2716	urk.1.exe

Loads dropped DLL 8 IoCs

pid	Process
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.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

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

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2488	urk.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2776	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe
2716	urk.1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 992 wrote to memory of 2488	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 992 wrote to memory of 2488	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 992 wrote to memory of 2488	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 992 wrote to memory of 2488	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	28
PID 992 wrote to memory of 2716	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 992 wrote to memory of 2716	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 992 wrote to memory of 2716	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 992 wrote to memory of 2716	992	73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe	30
PID 2716 wrote to memory of 2776	2716	urk.1.exe	31
PID 2716 wrote to memory of 2776	2716	urk.1.exe	31
PID 2716 wrote to memory of 2776	2716	urk.1.exe	31
PID 2716 wrote to memory of 2776	2716	urk.1.exe	31

C:\Users\Admin\AppData\Local\Temp\73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe
"C:\Users\Admin\AppData\Local\Temp\73cf32b2f6aff72dc11d609f61ebaae2d5827f18c97b48d71fd724c19f394771.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:992
- C:\Users\Admin\AppData\Local\Temp\urk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\urk.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2488
- C:\Users\Admin\AppData\Local\Temp\urk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\urk.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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:2776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\cb82900d7c0d19605a9c1adc1be5fc0aee77ab3bfdbb4ee40526b56ef2d7a2ce\abece7e37fe14b0183258def0f13236d.tmp

Filesize
1KB

MD5
581ab6417e85beabf59bdb020fed14ef

SHA1
6b2d8280aad27b6eadc0e1686b67b182866c3a4a

SHA256
92946a1a0b33dd01fb44f9cff4fbc9a5dc6e85a045a20b7fe198739e7fce7978

SHA512
7a278128ee2e583c68ad336da85544085710de329b782664b2f5abad2578578e349ccf5a32c8e1820e00d21a0598422957022a757a880e56280e9b0f7d15cfc7

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

Filesize
2KB

MD5
7f3bb1ddf8117d41972150e8a2458ffb

SHA1
4bea59e788a2c283996cdbcc7a8883f0e772052c

SHA256
9d146c48317e8a05d34027e15b8fd6edee892cf27597655e3eead9fe9b961206

SHA512
5dc34df0568b93ed98e1c0eeea29bedf97a52b3b5a1bebc45a274fc802464a8d537e84299470794f242fdab34472fe97edec60077ae558d40a6753ba83fdd215

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

Filesize
3KB

MD5
ac9ba5cf23fe94a623d1afed9cc5edb5

SHA1
838fd1df09361587c6a0b9d5c86bcabe8db2fa42

SHA256
b35a1c6989cddfa2c7ed053526d1b9123ef42c19b8a21398904fc8118944e8cf

SHA512
efc82146386c884af8b1222adfcfdeeb90874cee77198166d841578d94551530145df30dae5f9fdf7b86370a873d38779f0e71d69fee9da53f7673df1d84f693

Download Submit
\Users\Admin\AppData\Local\Temp\urk.0.exe

Filesize
223KB

MD5
280229b137b0f36f2b18b9bc7841995d

SHA1
d800c8ecc758ccacfe9a91efd45904efcc17b84a

SHA256
49533fc0ca008e430d35fdabab4b200a70e629e62f5b16f9157b5a82b6494536

SHA512
aeb7566ad83b6b1a01e2d8f6e557a18a75a8bd4229f72cc9e1b1ffe9dd86d14469937eea221e0d436274d4444d4f1732098b98ca3ddc3c7aec65867107fbdec5

Download Submit
\Users\Admin\AppData\Local\Temp\urk.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/992-2-0x0000000000400000-0x0000000001A27000-memory.dmp

Filesize
22.2MB

Download
memory/992-34-0x0000000000400000-0x0000000001A27000-memory.dmp

Filesize
22.2MB

Download
memory/992-1-0x0000000000400000-0x0000000001A27000-memory.dmp

Filesize
22.2MB

Download
memory/2488-58-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/2488-139-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/2488-125-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/2488-121-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/2488-112-0x0000000000400000-0x0000000002574000-memory.dmp

Filesize
33.5MB

Download
memory/2716-70-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2776-79-0x000000001E660000-0x000000001E68A000-memory.dmp

Filesize
168KB

Download
memory/2776-90-0x0000000005810000-0x0000000005832000-memory.dmp

Filesize
136KB

Download
memory/2776-76-0x0000000005C00000-0x0000000005C24000-memory.dmp

Filesize
144KB

Download
memory/2776-80-0x000000001E690000-0x000000001E742000-memory.dmp

Filesize
712KB

Download
memory/2776-81-0x0000000000870000-0x000000000087A000-memory.dmp

Filesize
40KB

Download
memory/2776-85-0x000000001FEB0000-0x00000000201B0000-memory.dmp

Filesize
3.0MB

Download
memory/2776-87-0x0000000000890000-0x000000000089A000-memory.dmp

Filesize
40KB

Download
memory/2776-88-0x0000000000920000-0x000000000092A000-memory.dmp

Filesize
40KB

Download
memory/2776-89-0x000000001ECB0000-0x000000001ED12000-memory.dmp

Filesize
392KB

Download
memory/2776-78-0x000000001E130000-0x000000001E13A000-memory.dmp

Filesize
40KB

Download
memory/2776-93-0x0000000005830000-0x000000000583C000-memory.dmp

Filesize
48KB

Download
memory/2776-99-0x0000000000890000-0x000000000089A000-memory.dmp

Filesize
40KB

Download
memory/2776-98-0x0000000000890000-0x000000000089A000-memory.dmp

Filesize
40KB

Download
memory/2776-75-0x0000000000930000-0x0000000000944000-memory.dmp

Filesize
80KB

Download
memory/2776-74-0x0000000005860000-0x000000000586C000-memory.dmp

Filesize
48KB

Download
memory/2776-73-0x0000000000450000-0x0000000000460000-memory.dmp

Filesize
64KB

Download
memory/2776-72-0x000000001EE30000-0x000000001EF3A000-memory.dmp

Filesize
1.0MB

Download
memory/2776-71-0x0000000000940000-0x0000000004174000-memory.dmp

Filesize
56.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads