stealc | d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb

Analysis

max time kernel
149s
max time network
159s
platform
windows11-21h2_x64
resource
win11-20240319-en
resource tags

arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
submitted
09-04-2024 00:30

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General

Target

d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe
Size

415KB
MD5

4c0dc5941c1cc470e37442aa820f9dd8
SHA1

6e04b61dee4a41fecc03524f4f0e0e893a0d5ece
SHA256

d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb
SHA512

5ae0f33def9abb44c1184ff5598c366bd58bce75a698468a12d386ffd5fa554faae3fde238dcaa2cea46e08fed777c24203781e782c04cf0ab7aa9119a0a1d90
SSDEEP

6144:nFphGWg9GOLmEenm1GkAucLzpaR8gRQMGCtPvh1cGpBfHIY:FpRQcSGGckRDBPv7zHHIY

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/1092-146-0x000001E04C7D0000-0x000001E0500C8000-memory.dmp	family_zgrat_v1
behavioral2/memory/1092-149-0x000001E06A880000-0x000001E06A990000-memory.dmp	family_zgrat_v1
behavioral2/memory/1092-157-0x000001E06A720000-0x000001E06A744000-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
3148	u2r4.0.exe
2432	u2r4.1.exe
3364	HJDGCGDBGC.exe

Loads dropped DLL 2 IoCs

pid	Process
3148	u2r4.0.exe
3148	u2r4.0.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 1 IoCs

pid	pid_target	Process	procid_target
2968	3148	WerFault.exe	80

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	u2r4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2r4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2r4.1.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	u2r4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2r4.0.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2100	PING.EXE

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3148	u2r4.0.exe
3148	u2r4.0.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
3148	u2r4.0.exe
3148	u2r4.0.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1092	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe
2432	u2r4.1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3568 wrote to memory of 3148	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	80
PID 3568 wrote to memory of 3148	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	80
PID 3568 wrote to memory of 3148	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	80
PID 3568 wrote to memory of 2432	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	83
PID 3568 wrote to memory of 2432	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	83
PID 3568 wrote to memory of 2432	3568	d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe	83
PID 2432 wrote to memory of 1092	2432	u2r4.1.exe	85
PID 2432 wrote to memory of 1092	2432	u2r4.1.exe	85
PID 3148 wrote to memory of 3048	3148	u2r4.0.exe	86
PID 3148 wrote to memory of 3048	3148	u2r4.0.exe	86
PID 3148 wrote to memory of 3048	3148	u2r4.0.exe	86
PID 3048 wrote to memory of 3364	3048	cmd.exe	90
PID 3048 wrote to memory of 3364	3048	cmd.exe	90
PID 3048 wrote to memory of 3364	3048	cmd.exe	90
PID 3364 wrote to memory of 492	3364	HJDGCGDBGC.exe	93
PID 3364 wrote to memory of 492	3364	HJDGCGDBGC.exe	93
PID 3364 wrote to memory of 492	3364	HJDGCGDBGC.exe	93
PID 492 wrote to memory of 2100	492	cmd.exe	95
PID 492 wrote to memory of 2100	492	cmd.exe	95
PID 492 wrote to memory of 2100	492	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe
"C:\Users\Admin\AppData\Local\Temp\d436b4e8a05055faa3305ed75bc0dec4f79402d0d7ef31e07883fd477498b3cb.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3568
- C:\Users\Admin\AppData\Local\Temp\u2r4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2r4.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3148
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\HJDGCGDBGC.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3048
  - - C:\Users\Admin\AppData\Local\Temp\HJDGCGDBGC.exe
      "C:\Users\Admin\AppData\Local\Temp\HJDGCGDBGC.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of WriteProcessMemory
      PID:3364
    - - 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\HJDGCGDBGC.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:492
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:2100
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3148 -s 2056
    3⤵
    - Program crash
    PID:2968
- C:\Users\Admin\AppData\Local\Temp\u2r4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2r4.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2432
- - 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:1092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3148 -ip 3148
1⤵
PID:3432

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\HJDGCGDBGC.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2r4.0.exe

Filesize
273KB

MD5
7d94aad41d8930346ffdb5967eea4171

SHA1
4bb4649a8e73946e356dd6710d1a21cc3e3cdeba

SHA256
7d763bbd8f2c9e84c655e757000dc74dc0f2f9fe12b13bc6a1271288de4daf59

SHA512
32b88906f3caa345d2ccaae95be097944bfadca630d5bf4f5c717ebf7cd7acac9925361d3ec4db4fd8fa6bf86f898d4b7c86f8e7fdfdf74a65eb030be9fe8b74

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2r4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1092-181-0x000001E06F7E0000-0x000001E06F802000-memory.dmp

Filesize
136KB

Download
memory/1092-202-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-204-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-203-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-168-0x000001E06ADE0000-0x000001E06B0E0000-memory.dmp

Filesize
3.0MB

Download
memory/1092-201-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-200-0x00007FFABC3F0000-0x00007FFABCEB2000-memory.dmp

Filesize
10.8MB

Download
memory/1092-197-0x000001E06B280000-0x000001E06B2A2000-memory.dmp

Filesize
136KB

Download
memory/1092-189-0x000001E06B1E0000-0x000001E06B1EC000-memory.dmp

Filesize
48KB

Download
memory/1092-188-0x000001E06B230000-0x000001E06B280000-memory.dmp

Filesize
320KB

Download
memory/1092-182-0x000001E06FD50000-0x000001E070278000-memory.dmp

Filesize
5.2MB

Download
memory/1092-145-0x00007FFABC3F0000-0x00007FFABCEB2000-memory.dmp

Filesize
10.8MB

Download
memory/1092-146-0x000001E04C7D0000-0x000001E0500C8000-memory.dmp

Filesize
57.0MB

Download
memory/1092-147-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-149-0x000001E06A880000-0x000001E06A990000-memory.dmp

Filesize
1.1MB

Download
memory/1092-150-0x000001E050580000-0x000001E050590000-memory.dmp

Filesize
64KB

Download
memory/1092-154-0x000001E051EF0000-0x000001E051EFC000-memory.dmp

Filesize
48KB

Download
memory/1092-180-0x000001E06F7D0000-0x000001E06F7DA000-memory.dmp

Filesize
40KB

Download
memory/1092-155-0x000001E051EE0000-0x000001E051EF4000-memory.dmp

Filesize
80KB

Download
memory/1092-157-0x000001E06A720000-0x000001E06A744000-memory.dmp

Filesize
144KB

Download
memory/1092-158-0x000001E06A750000-0x000001E06A75A000-memory.dmp

Filesize
40KB

Download
memory/1092-160-0x000001E06ABD0000-0x000001E06ABFA000-memory.dmp

Filesize
168KB

Download
memory/1092-159-0x000001E06AB20000-0x000001E06ABD2000-memory.dmp

Filesize
712KB

Download
memory/1092-161-0x000001E06AC00000-0x000001E06AC7A000-memory.dmp

Filesize
488KB

Download
memory/1092-164-0x000001E051EC0000-0x000001E051ECA000-memory.dmp

Filesize
40KB

Download
memory/1092-163-0x000001E06AD60000-0x000001E06ADD6000-memory.dmp

Filesize
472KB

Download
memory/1092-162-0x000001E06AC80000-0x000001E06ACE2000-memory.dmp

Filesize
392KB

Download
memory/1092-176-0x000001E06F0D0000-0x000001E06F0DE000-memory.dmp

Filesize
56KB

Download
memory/1092-198-0x000001E06B2B0000-0x000001E06B2CE000-memory.dmp

Filesize
120KB

Download
memory/1092-172-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/1092-173-0x000001E06F180000-0x000001E06F188000-memory.dmp

Filesize
32KB

Download
memory/1092-175-0x000001E06F100000-0x000001E06F138000-memory.dmp

Filesize
224KB

Download
memory/1092-171-0x000001E0504E0000-0x000001E0504F0000-memory.dmp

Filesize
64KB

Download
memory/2432-144-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2432-28-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

Download
memory/2432-132-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/3148-15-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/3148-174-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/3148-193-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/3148-131-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/3148-14-0x0000000002200000-0x0000000002227000-memory.dmp

Filesize
156KB

Download
memory/3148-31-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3148-13-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/3148-170-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/3364-192-0x0000000000DB0000-0x0000000000DC0000-memory.dmp

Filesize
64KB

Download
memory/3364-190-0x0000000071960000-0x0000000072111000-memory.dmp

Filesize
7.7MB

Download
memory/3364-191-0x0000000000330000-0x0000000000350000-memory.dmp

Filesize
128KB

Download
memory/3364-196-0x0000000071960000-0x0000000072111000-memory.dmp

Filesize
7.7MB

Download
memory/3568-2-0x0000000002380000-0x00000000023EC000-memory.dmp

Filesize
432KB

Download
memory/3568-3-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download
memory/3568-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/3568-27-0x0000000002380000-0x00000000023EC000-memory.dmp

Filesize
432KB

Download
memory/3568-26-0x0000000000400000-0x00000000004D4000-memory.dmp

Filesize
848KB

Download