stealc | c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3

Analysis

max time kernel
123s
max time network
125s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
04-04-2024 10:51

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General

Target

c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe
Size

359KB
MD5

b143722ee29d236259835470633551ee
SHA1

69f35e71e72530d437297056f5e1c20f50423edb
SHA256

c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3
SHA512

80d503f7351bf364f8f1ae8a32c3717c2a11d4273cc67de632ea4c54d7dd5924024ef43c4d7a940a76e9b4207660ff9a4672e45b2695b88bbbce1ea8c8190401
SSDEEP

6144:XnqaECNPTFkBgWFtBaNzFbwhkzp/LU++d0RIxgZk+mGMeja/K5+QEhIs:6a9NPTF8LFt6Jvzp/L2+Ixp1Gxj4KihJ

Score

10^/10

stealc zgrat discovery rat spyware stealer

Malware Config

Extracted

Family

stealc

http://185.172.128.209

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

Detect ZGRat V1 3 IoCs

resource	yara_rule
behavioral2/memory/4168-156-0x000001BED74B0000-0x000001BEDADA8000-memory.dmp	family_zgrat_v1
behavioral2/memory/4168-158-0x000001BEF54C0000-0x000001BEF55D0000-memory.dmp	family_zgrat_v1
behavioral2/memory/4168-162-0x000001BEF5610000-0x000001BEF5634000-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 3 IoCs

pid	Process
4676	u18k.0.exe
3056	u18k.1.exe
1808	JJJJEBGDAF.exe

Loads dropped DLL 2 IoCs

pid	Process
4676	u18k.0.exe
4676	u18k.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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
716	1604	WerFault.exe	76
2520	4676	WerFault.exe	77

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 enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u18k.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u18k.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u18k.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	u18k.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u18k.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1612	PING.EXE

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4676	u18k.0.exe
4676	u18k.0.exe
4676	u18k.0.exe
4676	u18k.0.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4168	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe
3056	u18k.1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 4676	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	77
PID 1604 wrote to memory of 4676	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	77
PID 1604 wrote to memory of 4676	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	77
PID 1604 wrote to memory of 3056	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	80
PID 1604 wrote to memory of 3056	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	80
PID 1604 wrote to memory of 3056	1604	c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe	80
PID 4676 wrote to memory of 2328	4676	u18k.0.exe	85
PID 4676 wrote to memory of 2328	4676	u18k.0.exe	85
PID 4676 wrote to memory of 2328	4676	u18k.0.exe	85
PID 2328 wrote to memory of 1808	2328	cmd.exe	88
PID 2328 wrote to memory of 1808	2328	cmd.exe	88
PID 2328 wrote to memory of 1808	2328	cmd.exe	88
PID 1808 wrote to memory of 3816	1808	JJJJEBGDAF.exe	91
PID 1808 wrote to memory of 3816	1808	JJJJEBGDAF.exe	91
PID 1808 wrote to memory of 3816	1808	JJJJEBGDAF.exe	91
PID 3816 wrote to memory of 1612	3816	cmd.exe	93
PID 3816 wrote to memory of 1612	3816	cmd.exe	93
PID 3816 wrote to memory of 1612	3816	cmd.exe	93
PID 3056 wrote to memory of 4168	3056	u18k.1.exe	90
PID 3056 wrote to memory of 4168	3056	u18k.1.exe	90

C:\Users\Admin\AppData\Local\Temp\c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe
"C:\Users\Admin\AppData\Local\Temp\c6d658617506024ad0bc039975f060655e2d566be2bf77bf5d48020318ec1da3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Users\Admin\AppData\Local\Temp\u18k.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u18k.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4676
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJJJEBGDAF.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2328
  - - C:\Users\Admin\AppData\Local\Temp\JJJJEBGDAF.exe
      "C:\Users\Admin\AppData\Local\Temp\JJJJEBGDAF.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:1808
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\JJJJEBGDAF.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:3816
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:1612
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 2548
    3⤵
    - Program crash
    PID:2520
- C:\Users\Admin\AppData\Local\Temp\u18k.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u18k.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:3056
- - 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:4168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1604 -s 1156
  2⤵
  - Program crash
  PID:716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 1604 -ip 1604
1⤵
PID:344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4676 -ip 4676
1⤵
PID:4312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Are.docx

Filesize
11KB

MD5
a33e5b189842c5867f46566bdbf7a095

SHA1
e1c06359f6a76da90d19e8fd95e79c832edb3196

SHA256
5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

SHA512
f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

Download Submit
C:\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
C:\ProgramData\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

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

Filesize
3KB

MD5
647ab3766bfc9b59a08e9e4af0853235

SHA1
3db6564d13a7cf683bcb6e1599fa01ef3df27bba

SHA256
8930733f1fb00614d11b777e83e4b4e03ec8b4cf8c56eee3ef89b865d1e286fd

SHA512
81a0986dbf19f66de6012552a45fe4bbfd6ec8a203f9d1a3663a10375e0b158df28a1e71d75a51575573886cd716686c0fa32e452ceb1bb653ecbd26ebe49c9e

Download Submit
C:\Users\Admin\AppData\Local\Temp\u18k.0.exe

Filesize
218KB

MD5
e56c83770da1263eb2f14faee7adc64f

SHA1
f720dc655ba9f7449a4d145cab0377353bde8ab1

SHA256
218761e370074e320b1f371ff45f203f5b5dbfef76786e2070a0df98ccb08c0f

SHA512
22a6460baf44c0768a1a507567ecc2424f6d00a08cc20b51aeb657c9484efcf5014ff42f4ea5a1f4fe2c6eb7b6b982c4cec8a30d0331b68f710575e2dfa65757

Download Submit
C:\Users\Admin\AppData\Local\Temp\u18k.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1604-1-0x0000000002F10000-0x0000000003010000-memory.dmp

Filesize
1024KB

Download
memory/1604-31-0x0000000000400000-0x0000000002B83000-memory.dmp

Filesize
39.5MB

Download
memory/1604-32-0x00000000049F0000-0x0000000004A5C000-memory.dmp

Filesize
432KB

Download
memory/1604-3-0x0000000000400000-0x0000000002B83000-memory.dmp

Filesize
39.5MB

Download
memory/1604-2-0x00000000049F0000-0x0000000004A5C000-memory.dmp

Filesize
432KB

Download
memory/1808-150-0x0000000004DF0000-0x0000000004E00000-memory.dmp

Filesize
64KB

Download
memory/1808-153-0x00000000713F0000-0x0000000071BA1000-memory.dmp

Filesize
7.7MB

Download
memory/1808-146-0x00000000713F0000-0x0000000071BA1000-memory.dmp

Filesize
7.7MB

Download
memory/1808-145-0x00000000003E0000-0x0000000000400000-memory.dmp

Filesize
128KB

Download
memory/3056-26-0x0000000002770000-0x0000000002771000-memory.dmp

Filesize
4KB

Download
memory/3056-154-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3056-129-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4168-158-0x000001BEF54C0000-0x000001BEF55D0000-memory.dmp

Filesize
1.1MB

Download
memory/4168-169-0x000001BEF5460000-0x000001BEF546A000-memory.dmp

Filesize
40KB

Download
memory/4168-194-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-193-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-192-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-191-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-155-0x00007FF9C6730000-0x00007FF9C71F2000-memory.dmp

Filesize
10.8MB

Download
memory/4168-156-0x000001BED74B0000-0x000001BEDADA8000-memory.dmp

Filesize
57.0MB

Download
memory/4168-157-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-190-0x00007FF9C6730000-0x00007FF9C71F2000-memory.dmp

Filesize
10.8MB

Download
memory/4168-160-0x000001BEF5490000-0x000001BEF549C000-memory.dmp

Filesize
48KB

Download
memory/4168-162-0x000001BEF5610000-0x000001BEF5634000-memory.dmp

Filesize
144KB

Download
memory/4168-161-0x000001BEF5480000-0x000001BEF5494000-memory.dmp

Filesize
80KB

Download
memory/4168-159-0x000001BEDB2A0000-0x000001BEDB2B0000-memory.dmp

Filesize
64KB

Download
memory/4168-165-0x000001BEF57F0000-0x000001BEF58A2000-memory.dmp

Filesize
712KB

Download
memory/4168-168-0x000001BEF5A00000-0x000001BEF5A76000-memory.dmp

Filesize
472KB

Download
memory/4168-167-0x000001BEF5920000-0x000001BEF5982000-memory.dmp

Filesize
392KB

Download
memory/4168-166-0x000001BEF58A0000-0x000001BEF591A000-memory.dmp

Filesize
488KB

Download
memory/4168-164-0x000001BEF57C0000-0x000001BEF57EA000-memory.dmp

Filesize
168KB

Download
memory/4168-188-0x000001BEFA5A0000-0x000001BEFA5BE000-memory.dmp

Filesize
120KB

Download
memory/4168-173-0x000001BEF5A80000-0x000001BEF5D80000-memory.dmp

Filesize
3.0MB

Download
memory/4168-163-0x000001BEF57A0000-0x000001BEF57AA000-memory.dmp

Filesize
40KB

Download
memory/4168-176-0x000001BEF96F0000-0x000001BEF96F8000-memory.dmp

Filesize
32KB

Download
memory/4168-179-0x000001BEF9DC0000-0x000001BEF9DCE000-memory.dmp

Filesize
56KB

Download
memory/4168-178-0x000001BEF9E00000-0x000001BEF9E38000-memory.dmp

Filesize
224KB

Download
memory/4168-177-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-175-0x000001BEF54B0000-0x000001BEF54C0000-memory.dmp

Filesize
64KB

Download
memory/4168-181-0x000001BEFA750000-0x000001BEFA772000-memory.dmp

Filesize
136KB

Download
memory/4168-180-0x000001BEF9E80000-0x000001BEF9E8A000-memory.dmp

Filesize
40KB

Download
memory/4168-182-0x000001BEFACA0000-0x000001BEFB1C8000-memory.dmp

Filesize
5.2MB

Download
memory/4168-185-0x000001BEFA520000-0x000001BEFA570000-memory.dmp

Filesize
320KB

Download
memory/4168-186-0x000001BEFA4D0000-0x000001BEFA4DC000-memory.dmp

Filesize
48KB

Download
memory/4168-187-0x000001BEFA570000-0x000001BEFA592000-memory.dmp

Filesize
136KB

Download
memory/4676-128-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download
memory/4676-13-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/4676-14-0x0000000004860000-0x0000000004887000-memory.dmp

Filesize
156KB

Download
memory/4676-15-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download
memory/4676-37-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4676-147-0x0000000000400000-0x0000000002B60000-memory.dmp

Filesize
39.4MB

Download