stealc | 75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3

Analysis

max time kernel
147s
max time network
153s
platform
windows11-21h2_x64
resource
win11-20240426-en
resource tags

arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
submitted
07-05-2024 23:46

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General

Target

75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe
Size

403KB
MD5

bd3cca5d8d1c4cea4b43401de8081e7d
SHA1

b85c1c723cbc8f4c202ef1b9f03a086d15ee2e00
SHA256

75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3
SHA512

73f9990cc836d635bb56c414231a69dadf8e632b513d3f417c8cf47c15cfb87262bb88442528c330fa82d1db411b4f52fa61fe5878b62ddfc74ecafc3073df43
SSDEEP

6144:psA3pbjuJg1hDDcvytIS1Kq0j9Or2rGIJl5KBFRvDHf6:psmpbjuJgzbh0BO6Vl0Vvj6

Score

10^/10

stealc zgrat discovery rat spyware 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/1828-64-0x000001800CE00000-0x0000018010634000-memory.dmp	family_zgrat_v1
behavioral2/memory/1828-69-0x000001802AEB0000-0x000001802AED4000-memory.dmp	family_zgrat_v1
behavioral2/memory/1828-65-0x000001802ADA0000-0x000001802AEAA000-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
4860	utw.0.exe
4580	utw.1.exe

Loads dropped DLL 2 IoCs

pid	Process
4860	utw.0.exe
4860	utw.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
2104	1076	WerFault.exe	78
632	4860	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	utw.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	utw.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	utw.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	utw.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	utw.0.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
776	timeout.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4860	utw.0.exe
4860	utw.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1828	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe
4580	utw.1.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 4860	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	81
PID 1076 wrote to memory of 4860	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	81
PID 1076 wrote to memory of 4860	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	81
PID 1076 wrote to memory of 4580	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	84
PID 1076 wrote to memory of 4580	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	84
PID 1076 wrote to memory of 4580	1076	75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe	84
PID 4580 wrote to memory of 1828	4580	utw.1.exe	89
PID 4580 wrote to memory of 1828	4580	utw.1.exe	89
PID 4860 wrote to memory of 3020	4860	utw.0.exe	92
PID 4860 wrote to memory of 3020	4860	utw.0.exe	92
PID 4860 wrote to memory of 3020	4860	utw.0.exe	92
PID 3020 wrote to memory of 776	3020	cmd.exe	95
PID 3020 wrote to memory of 776	3020	cmd.exe	95
PID 3020 wrote to memory of 776	3020	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe
"C:\Users\Admin\AppData\Local\Temp\75b566d58ea6b227bce615f66df7df35a75b936910386ac2c98dfd09fcad8ad3.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Users\Admin\AppData\Local\Temp\utw.0.exe
  "C:\Users\Admin\AppData\Local\Temp\utw.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4860
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\utw.0.exe" & del "C:\ProgramData\*.dll"" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3020
  - - C:\Windows\SysWOW64\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:776
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 2396
    3⤵
    - Program crash
    PID:632
- C:\Users\Admin\AppData\Local\Temp\utw.1.exe
  "C:\Users\Admin\AppData\Local\Temp\utw.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4580
- - 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:1828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1076 -s 996
  2⤵
  - Program crash
  PID:2104

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1076 -ip 1076
1⤵
PID:1388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 4860 -ip 4860
1⤵
PID:2504

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\iolo\dm\ioloDMLog.txt

Filesize
2KB

MD5
f66484e874ddabcd0c5dcc80dfd89cac

SHA1
3650686c0fb0e8f7f8f16398fc705226d5549b92

SHA256
47a9e949083c75c17fa138ea77c75cec7d4178e4205934b1ab67a5041446dc90

SHA512
e3aa6c25866de50c71229b75cbd3d59cb7ff6b302c3881d407769d737daa1f0ba599944b02f5051fcb9155ce92d1898fe61c47666f49a816c35ae1f72a637423

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

Filesize
262KB

MD5
ef92ce35b564f1c40c75fc513fe11cc5

SHA1
21d28c08e0d79e741bd5d04f4e343846ca8c6d05

SHA256
36465ac7849d2877b2194f05394ac0c540054cc771b0d8d57810c6262c2fae3a

SHA512
b6618d10c9f094e7b1fef524da5abe2ab248c0addad699779328431a0b83ac73fedca162e6682dc081bf884d31ee6231265c00263fa23fdd9799c8f662f4e6f0

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

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1076-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1076-2-0x0000000002EC0000-0x0000000002F2C000-memory.dmp

Filesize
432KB

Download
memory/1076-1-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

Filesize
1024KB

Download
memory/1076-16-0x0000000000400000-0x0000000002B22000-memory.dmp

Filesize
39.1MB

Download
memory/1076-29-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1076-28-0x0000000000400000-0x0000000002B22000-memory.dmp

Filesize
39.1MB

Download
memory/1828-82-0x000001802F590000-0x000001802F5C8000-memory.dmp

Filesize
224KB

Download
memory/1828-87-0x000001802FF80000-0x000001802FFA2000-memory.dmp

Filesize
136KB

Download
memory/1828-68-0x000001802AD20000-0x000001802AD34000-memory.dmp

Filesize
80KB

Download
memory/1828-69-0x000001802AEB0000-0x000001802AED4000-memory.dmp

Filesize
144KB

Download
memory/1828-72-0x000001802B090000-0x000001802B142000-memory.dmp

Filesize
712KB

Download
memory/1828-74-0x000001802B1E0000-0x000001802B202000-memory.dmp

Filesize
136KB

Download
memory/1828-73-0x000001802B190000-0x000001802B1E0000-memory.dmp

Filesize
320KB

Download
memory/1828-71-0x000001802B050000-0x000001802B07A000-memory.dmp

Filesize
168KB

Download
memory/1828-75-0x0000018010B50000-0x0000018010B5A000-memory.dmp

Filesize
40KB

Download
memory/1828-79-0x000001802B210000-0x000001802B510000-memory.dmp

Filesize
3.0MB

Download
memory/1828-70-0x000001802B030000-0x000001802B03A000-memory.dmp

Filesize
40KB

Download
memory/1828-67-0x000001802AD30000-0x000001802AD3C000-memory.dmp

Filesize
48KB

Download
memory/1828-66-0x0000018010B30000-0x0000018010B40000-memory.dmp

Filesize
64KB

Download
memory/1828-65-0x000001802ADA0000-0x000001802AEAA000-memory.dmp

Filesize
1.0MB

Download
memory/1828-84-0x000001802F580000-0x000001802F588000-memory.dmp

Filesize
32KB

Download
memory/1828-64-0x000001800CE00000-0x0000018010634000-memory.dmp

Filesize
56.2MB

Download
memory/1828-86-0x000001802FF20000-0x000001802FF82000-memory.dmp

Filesize
392KB

Download
memory/1828-88-0x00000180304D0000-0x00000180309F8000-memory.dmp

Filesize
5.2MB

Download
memory/1828-91-0x000001802FC80000-0x000001802FC8C000-memory.dmp

Filesize
48KB

Download
memory/1828-85-0x000001802FF00000-0x000001802FF0A000-memory.dmp

Filesize
40KB

Download
memory/1828-83-0x000001802F560000-0x000001802F56E000-memory.dmp

Filesize
56KB

Download
memory/1828-93-0x000001802FCC0000-0x000001802FCDE000-memory.dmp

Filesize
120KB

Download
memory/1828-92-0x000001802FD60000-0x000001802FDD6000-memory.dmp

Filesize
472KB

Download
memory/1828-81-0x000001802FC50000-0x000001802FC58000-memory.dmp

Filesize
32KB

Download
memory/4580-63-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4580-62-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4860-97-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4860-139-0x0000000000400000-0x0000000002AFE000-memory.dmp

Filesize
39.0MB

Download
memory/4860-50-0x0000000000400000-0x0000000002AFE000-memory.dmp

Filesize
39.0MB

Download
memory/4860-167-0x0000000000400000-0x0000000002AFE000-memory.dmp

Filesize
39.0MB

Download
memory/4860-34-0x0000000000400000-0x0000000002AFE000-memory.dmp

Filesize
39.0MB

Download
memory/4860-181-0x0000000000400000-0x0000000002AFE000-memory.dmp

Filesize
39.0MB

Download