stealc | d7a29a6c822d5ac4f4faef4105aa50a563832decca35cfab3c24cb1b389b7f03

General

Target

0251b972016cb69c049602a3d2aa3ff7.exe
Size

416KB
MD5

0251b972016cb69c049602a3d2aa3ff7
SHA1

24847d133682d9d820dc8163019359927b6d71c2
SHA256

d7a29a6c822d5ac4f4faef4105aa50a563832decca35cfab3c24cb1b389b7f03
SHA512

523e359293557144d8c4dc09a6196e4eae5cfa9d11bd8d1353ca8dc347415f019436505fb72e0a5f0332e3ea24fcb97440fce1f64ea0d7ab868d6fd81eb9f77d
SSDEEP

6144:EkIIKkd5F7LcRmt5tuGEBQ4ZHXbA/3TntkIKcqFWWgfLR8tai6:E3DkzF7gmt5tuPBQ6LO3btbKnuLWtf6

Score

10^/10

stealc zgrat discovery rat spyware 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/536-126-0x0000000000B00000-0x00000000043F8000-memory.dmp	family_zgrat_v1
behavioral1/memory/536-127-0x000000001EED0000-0x000000001EFE0000-memory.dmp	family_zgrat_v1
behavioral1/memory/536-131-0x000000001E100000-0x000000001E124000-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
2080	u1ak.0.exe
2428	u1ak.1.exe

Loads dropped DLL 11 IoCs

pid	Process
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
1676	0251b972016cb69c049602a3d2aa3ff7.exe
2080	u1ak.0.exe
2080	u1ak.0.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
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 opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ak.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ak.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1ak.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	u1ak.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1ak.0.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2080	u1ak.0.exe
2080	u1ak.0.exe
536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	536	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe
2428	u1ak.1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 2080	1676	0251b972016cb69c049602a3d2aa3ff7.exe	28
PID 1676 wrote to memory of 2080	1676	0251b972016cb69c049602a3d2aa3ff7.exe	28
PID 1676 wrote to memory of 2080	1676	0251b972016cb69c049602a3d2aa3ff7.exe	28
PID 1676 wrote to memory of 2080	1676	0251b972016cb69c049602a3d2aa3ff7.exe	28
PID 1676 wrote to memory of 2428	1676	0251b972016cb69c049602a3d2aa3ff7.exe	29
PID 1676 wrote to memory of 2428	1676	0251b972016cb69c049602a3d2aa3ff7.exe	29
PID 1676 wrote to memory of 2428	1676	0251b972016cb69c049602a3d2aa3ff7.exe	29
PID 1676 wrote to memory of 2428	1676	0251b972016cb69c049602a3d2aa3ff7.exe	29
PID 2428 wrote to memory of 536	2428	u1ak.1.exe	31
PID 2428 wrote to memory of 536	2428	u1ak.1.exe	31
PID 2428 wrote to memory of 536	2428	u1ak.1.exe	31
PID 2428 wrote to memory of 536	2428	u1ak.1.exe	31

C:\Users\Admin\AppData\Local\Temp\0251b972016cb69c049602a3d2aa3ff7.exe
"C:\Users\Admin\AppData\Local\Temp\0251b972016cb69c049602a3d2aa3ff7.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\u1ak.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1ak.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2080
- C:\Users\Admin\AppData\Local\Temp\u1ak.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1ak.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2428
- - 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:536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\ApplicationInsights\f40fa09571ae3e4604ca1ef5093c12d04345052412cd199086553bfab6d3b7c7\72ba76c28ff543ff8264e9578900ee85.tmp

Filesize
1KB

MD5
0e6165f3ea3a8e6d5bac2f66bf4dd8ab

SHA1
54f1d67eb09e8fb2764d4e15e81568ea0c9420a9

SHA256
3c6e92dadd4328b359fa64db2d9b5db9a9456a37fb8610b2654dd6a4aaa2a1f5

SHA512
1748665d07e62a65816b090106bf0334ec2959b26e2836ef123a0cf837841ff066c3180b05f29b558fe8378fc959eb15f226f300e3524d7ec905f8121ac23719

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

Filesize
2KB

MD5
d66ad5ad2566393a4a839201a9789d67

SHA1
a72b2b26f478cc71ad9e74d1ad337730a9d048be

SHA256
c9ecd13653d05f08cbefac570cba596329a49ed00e97127e17015ac9937e933e

SHA512
9592b77a3b635317272cae7d0bfb5723c3c6031592c255f35cae1a3ce35a5b6e0695110dbb862fac2235d60b7326eeaeb72af2739f5da452055d75f410aec947

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1ak.0.exe

Filesize
275KB

MD5
f3b64df1e1dcadb996afbd29f802b98f

SHA1
cc732d26d161e0369cb31b6e1d69dbe966540e56

SHA256
bb00ccce42346fcb6962e38f7e5cb22537210e838ee150731fb17babe2d114a1

SHA512
d17eb25749d97647175f9704685bee347631fbf72bf718d997e98ac9fea0c5bd41772430982f7e28ef1f2dfcf0a716ca634559033435c4e12da72caad8d63c3b

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

Download Submit
\Users\Admin\AppData\Local\Temp\u1ak.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/536-129-0x0000000005A90000-0x0000000005A9C000-memory.dmp

Filesize
48KB

Download
memory/536-133-0x000000001E140000-0x000000001E16A000-memory.dmp

Filesize
168KB

Download
memory/536-152-0x0000000000470000-0x000000000047A000-memory.dmp

Filesize
40KB

Download
memory/536-148-0x0000000005860000-0x000000000586C000-memory.dmp

Filesize
48KB

Download
memory/536-144-0x0000000000AE0000-0x0000000000AEA000-memory.dmp

Filesize
40KB

Download
memory/536-126-0x0000000000B00000-0x00000000043F8000-memory.dmp

Filesize
57.0MB

Download
memory/536-127-0x000000001EED0000-0x000000001EFE0000-memory.dmp

Filesize
1.1MB

Download
memory/536-128-0x0000000000AF0000-0x0000000000B00000-memory.dmp

Filesize
64KB

Download
memory/536-145-0x0000000005840000-0x0000000005862000-memory.dmp

Filesize
136KB

Download
memory/536-130-0x0000000005890000-0x00000000058A4000-memory.dmp

Filesize
80KB

Download
memory/536-131-0x000000001E100000-0x000000001E124000-memory.dmp

Filesize
144KB

Download
memory/536-143-0x0000000000470000-0x000000000047A000-memory.dmp

Filesize
40KB

Download
memory/536-132-0x000000001E120000-0x000000001E12A000-memory.dmp

Filesize
40KB

Download
memory/536-134-0x000000001E860000-0x000000001E912000-memory.dmp

Filesize
712KB

Download
memory/536-136-0x00000000004B0000-0x0000000000512000-memory.dmp

Filesize
392KB

Download
memory/536-135-0x000000001E190000-0x000000001E20A000-memory.dmp

Filesize
488KB

Download
memory/536-137-0x0000000000360000-0x000000000036A000-memory.dmp

Filesize
40KB

Download
memory/536-141-0x000000001FCB0000-0x000000001FFB0000-memory.dmp

Filesize
3.0MB

Download
memory/1676-67-0x0000000000400000-0x0000000001A32000-memory.dmp

Filesize
22.2MB

Download
memory/1676-1-0x0000000000400000-0x0000000001A32000-memory.dmp

Filesize
22.2MB

Download
memory/1676-2-0x0000000000400000-0x0000000001A32000-memory.dmp

Filesize
22.2MB

Download
memory/2080-113-0x0000000000400000-0x0000000001A0F000-memory.dmp

Filesize
22.1MB

Download
memory/2080-21-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2428-125-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads