stealc | cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16/04/2024, 07:48

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General

Target

cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe
Size

440KB
MD5

eae8889cd9008b17e04de05127d02907
SHA1

50ff7b18a2d6831f5857b35a273828d51f474805
SHA256

cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2
SHA512

92e29759532002877c191e1819c2d4c85521605c6214c55449cc94e58bdbf8256ad5d8f6428bc9f6269e95d06f74d1f417b889df2199e69696f14d147dcadb6e
SSDEEP

6144:L7N7Lc13hvoeeCGhKtaBJe8U7x2TampVQzZCR8h0fbku9LuTGP:L7N7YTo53ji8U74TNpVQdCR8+BLKGP

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
behavioral1/memory/1032-154-0x000001AFF7D20000-0x000001AFFB618000-memory.dmp	family_zgrat_v1
behavioral1/memory/1032-156-0x000001AFFED80000-0x000001AFFEE90000-memory.dmp	family_zgrat_v1
behavioral1/memory/1032-160-0x000001AFFDAE0000-0x000001AFFDB04000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	u15s.1.exe

Executes dropped EXE 2 IoCs

pid	Process
1588	u15s.0.exe
1180	u15s.1.exe

Loads dropped DLL 2 IoCs

pid	Process
1588	u15s.0.exe
1588	u15s.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4692	1588	WerFault.exe	91

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	u15s.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u15s.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u15s.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	u15s.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u15s.0.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
1588	u15s.0.exe
1588	u15s.0.exe
1588	u15s.0.exe
1588	u15s.0.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1032	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe
1180	u15s.1.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 5008 wrote to memory of 1504	5008	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	86
PID 1504 wrote to memory of 1588	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	91
PID 1504 wrote to memory of 1588	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	91
PID 1504 wrote to memory of 1588	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	91
PID 1504 wrote to memory of 1180	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	94
PID 1504 wrote to memory of 1180	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	94
PID 1504 wrote to memory of 1180	1504	cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe	94
PID 1180 wrote to memory of 1032	1180	u15s.1.exe	101
PID 1180 wrote to memory of 1032	1180	u15s.1.exe	101

C:\Users\Admin\AppData\Local\Temp\cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe
"C:\Users\Admin\AppData\Local\Temp\cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Users\Admin\AppData\Local\Temp\cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe
  "C:\Users\Admin\AppData\Local\Temp\cee4d31ad738a2f442cac136c23afc2b925c96e175847287b1e8348a52b816e2.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Users\Admin\AppData\Local\Temp\u15s.0.exe
    "C:\Users\Admin\AppData\Local\Temp\u15s.0.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:1588
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1588 -s 2352
      4⤵
      Program crash
      PID:4692
- - C:\Users\Admin\AppData\Local\Temp\u15s.1.exe
    "C:\Users\Admin\AppData\Local\Temp\u15s.1.exe"
    3⤵
    - 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:1180
  - - 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
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1588 -ip 1588
1⤵
PID:1596

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

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\u15s.0.exe

Filesize
299KB

MD5
1a1b456281cbc5de37ea7b669fcdb3c3

SHA1
0fb777063bc84421b075da503b9b16073cc47c37

SHA256
601509711a8a7f83e11ca01345dc63447e7d002ba06d9b1fc3bc546ebe6ffc7d

SHA512
4829be9513e748f2f2a551a475467c309ac1868a94d8c3554074607a39e2a3ed5d934bb391434b02e472de3620882dc7ec201fd37c710b15604d11a0abaa6d27

Download Submit
C:\Users\Admin\AppData\Local\Temp\u15s.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1032-160-0x000001AFFDAE0000-0x000001AFFDB04000-memory.dmp

Filesize
144KB

Download
memory/1032-178-0x000001AFFFFA0000-0x000001AFFFFAE000-memory.dmp

Filesize
56KB

Download
memory/1032-194-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-193-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-192-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-191-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-190-0x00007FF814F80000-0x00007FF815A41000-memory.dmp

Filesize
10.8MB

Download
memory/1032-188-0x000001AFFFFD0000-0x000001AFFFFEE000-memory.dmp

Filesize
120KB

Download
memory/1032-162-0x000001AFFEFD0000-0x000001AFFF082000-memory.dmp

Filesize
712KB

Download
memory/1032-184-0x000001B000040000-0x000001B000090000-memory.dmp

Filesize
320KB

Download
memory/1032-186-0x000001AF9B5D0000-0x000001AF9B5DC000-memory.dmp

Filesize
48KB

Download
memory/1032-185-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-181-0x000001AF9C950000-0x000001AF9CE78000-memory.dmp

Filesize
5.2MB

Download
memory/1032-180-0x000001AF9B5B0000-0x000001AF9B5D2000-memory.dmp

Filesize
136KB

Download
memory/1032-179-0x000001AF9B5A0000-0x000001AF9B5AA000-memory.dmp

Filesize
40KB

Download
memory/1032-152-0x00007FF814F80000-0x00007FF815A41000-memory.dmp

Filesize
10.8MB

Download
memory/1032-161-0x000001AFFDB10000-0x000001AFFDB1A000-memory.dmp

Filesize
40KB

Download
memory/1032-154-0x000001AFF7D20000-0x000001AFFB618000-memory.dmp

Filesize
57.0MB

Download
memory/1032-155-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-156-0x000001AFFED80000-0x000001AFFEE90000-memory.dmp

Filesize
1.1MB

Download
memory/1032-157-0x000001AFFD390000-0x000001AFFD3A0000-memory.dmp

Filesize
64KB

Download
memory/1032-158-0x000001AFFDA80000-0x000001AFFDA8C000-memory.dmp

Filesize
48KB

Download
memory/1032-159-0x000001AFFD3A0000-0x000001AFFD3B4000-memory.dmp

Filesize
80KB

Download
memory/1032-177-0x000001B000000000-0x000001B000038000-memory.dmp

Filesize
224KB

Download
memory/1032-164-0x000001AFFECE0000-0x000001AFFED5A000-memory.dmp

Filesize
488KB

Download
memory/1032-187-0x000001B000090000-0x000001B0000B2000-memory.dmp

Filesize
136KB

Download
memory/1032-176-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-165-0x000001AFFF080000-0x000001AFFF0E2000-memory.dmp

Filesize
392KB

Download
memory/1032-163-0x000001AFFDB30000-0x000001AFFDB5A000-memory.dmp

Filesize
168KB

Download
memory/1032-166-0x000001AFFF160000-0x000001AFFF1D6000-memory.dmp

Filesize
472KB

Download
memory/1032-167-0x000001AFFD370000-0x000001AFFD37A000-memory.dmp

Filesize
40KB

Download
memory/1032-171-0x000001AFFF1E0000-0x000001AFFF4E0000-memory.dmp

Filesize
3.0MB

Download
memory/1032-173-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1032-174-0x000001AFFFF90000-0x000001AFFFF98000-memory.dmp

Filesize
32KB

Download
memory/1032-175-0x000001AFFDB60000-0x000001AFFDB70000-memory.dmp

Filesize
64KB

Download
memory/1180-151-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1180-34-0x0000000000B50000-0x0000000000B51000-memory.dmp

Filesize
4KB

Download
memory/1180-135-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/1504-4-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1504-5-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1504-29-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1504-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1504-6-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1588-32-0x0000000000990000-0x00000000009B7000-memory.dmp

Filesize
156KB

Download
memory/1588-133-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/1588-33-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/1588-43-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1588-30-0x0000000000850000-0x0000000000950000-memory.dmp

Filesize
1024KB

Download
memory/1588-153-0x0000000000400000-0x000000000084C000-memory.dmp

Filesize
4.3MB

Download
memory/5008-2-0x0000000000A60000-0x0000000000ACD000-memory.dmp

Filesize
436KB

Download
memory/5008-1-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

Filesize
1024KB

Download