stealc | 28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867

General

Target

28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe
Size

411KB
MD5

935126760cb376d1b58462c92f22d2a4
SHA1

4f064c43585fe97c2fd3721732f11445a87d7690
SHA256

28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867
SHA512

c29587ff4b73812e4f0bbfac495c201e905883dbf74ffa94167de676ff480bb00a57df454bc63f0a9af1a6339ef34fdda8409a8e95f30181a60fb5c02ee782ee
SSDEEP

6144:uLmorbLzyLZ9sZ87lJCqaVmskIctWoPvz/tquYnwuyS3pYea5f31pY:uqo/DZ8jN6LNu/8uYmfvY

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
behavioral2/memory/2124-138-0x0000025451E30000-0x0000025455664000-memory.dmp	family_zgrat_v1
behavioral2/memory/2124-139-0x00000254716C0000-0x00000254717CA000-memory.dmp	family_zgrat_v1
behavioral2/memory/2124-143-0x000002546FAF0000-0x000002546FB14000-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

Detect binaries embedding considerable number of MFA browser extension IDs. 2 IoCs

resource	yara_rule
behavioral2/memory/3576-118-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
behavioral2/memory/3576-137-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 2 IoCs

resource	yara_rule
behavioral2/memory/3576-118-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
behavioral2/memory/3576-137-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 2 IoCs

resource	yara_rule
behavioral2/memory/3576-118-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers
behavioral2/memory/3576-137-0x0000000000400000-0x0000000002579000-memory.dmp	INDICATOR_SUSPICIOUS_Binary_References_Browsers

Detects encrypted or obfuscated .NET executables 1 IoCs

resource	yara_rule
behavioral2/memory/2124-138-0x0000025451E30000-0x0000025455664000-memory.dmp	INDICATOR_EXE_DotNET_Encrypted

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	u1i0.1.exe

Executes dropped EXE 2 IoCs

pid	Process
3576	u1i0.0.exe
2104	u1i0.1.exe

Loads dropped DLL 2 IoCs

pid	Process
3576	u1i0.0.exe
3576	u1i0.0.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
4848	1944	WerFault.exe	81
3656	3576	WerFault.exe	87

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 queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1i0.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1i0.1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u1i0.1.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	u1i0.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u1i0.0.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
3576	u1i0.0.exe
3576	u1i0.0.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe
2104	u1i0.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1944 wrote to memory of 3576	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	87
PID 1944 wrote to memory of 3576	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	87
PID 1944 wrote to memory of 3576	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	87
PID 1944 wrote to memory of 2104	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	89
PID 1944 wrote to memory of 2104	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	89
PID 1944 wrote to memory of 2104	1944	28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe	89
PID 2104 wrote to memory of 2124	2104	u1i0.1.exe	94
PID 2104 wrote to memory of 2124	2104	u1i0.1.exe	94

C:\Users\Admin\AppData\Local\Temp\28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe
"C:\Users\Admin\AppData\Local\Temp\28954c85b47c4ad04f55b9ca68e264e214520faefcca1e998753f0867676f867.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Users\Admin\AppData\Local\Temp\u1i0.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u1i0.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3576
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3576 -s 2340
    3⤵
    - Program crash
    PID:3656
- C:\Users\Admin\AppData\Local\Temp\u1i0.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u1i0.1.exe"
  2⤵
  - 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:2104
- - 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:2124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 1148
  2⤵
  - Program crash
  PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1944 -ip 1944
1⤵
PID:4564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 3576 -ip 3576
1⤵
PID:456

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

4

T1082

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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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
d592908506232ef984ae4f73a0fabb14

SHA1
b472dc03b7b952a3c9a87d22936b96835a9664f9

SHA256
fbf8f2b95c99e73c1b2a0ae98d4008fd6a9e9c2190978ba1ca93ef3f172e7c14

SHA512
77dd8dcb9ab8a78f7027ff62403c77e6a7d40776aebf7dc9a7d5a66ae79ff80a7a3eb31e4f715c22a3736b4a9dd97d5556939d2232b1ad40e06c2fe8b79db6c7

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

Filesize
3KB

MD5
3a7c6b1c07477fb3bf56fa4e141364cd

SHA1
ebb850079a894fea54a6c2bd650392a94cd8e088

SHA256
9363ab7148e2d5db0120c211313cd2431b740045606b565e508c6150fe7ae000

SHA512
bfb559aba942773ae116066b42d4a85b110328bae4c1c7c5d3ade5537f752cf0ae9b5e191cc6bf642833966ea9b89f53b301efc47c35ea7c1ce83f0d44cbd271

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1i0.0.exe

Filesize
245KB

MD5
dd87d2cb25ca0057e220c143dd4b628e

SHA1
48238804ea2bee1cb0cf1e1c946a12bfc1265a15

SHA256
e07d3383a78b7b05cd27cf2f569c6e93026e9f40dff4ccb8ec81efafa6b2b23f

SHA512
bc7a14eb4b49df3f99028b1ae6dadf6bbca205d564c13c7dc2d05641a9e0d06558eb0bf67aaf51cf5c9c70c9963fe6265755259dae8e643484b0124796f57ff3

Download Submit
C:\Users\Admin\AppData\Local\Temp\u1i0.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/1944-28-0x0000000002FE0000-0x000000000304D000-memory.dmp

Filesize
436KB

Download
memory/1944-27-0x0000000000400000-0x0000000002C49000-memory.dmp

Filesize
40.3MB

Download
memory/1944-1-0x0000000002CB0000-0x0000000002DB0000-memory.dmp

Filesize
1024KB

Download
memory/1944-29-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1944-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1944-2-0x0000000002FE0000-0x000000000304D000-memory.dmp

Filesize
436KB

Download
memory/2104-119-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2104-136-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/2124-140-0x000002546FAC0000-0x000002546FAD0000-memory.dmp

Filesize
64KB

Download
memory/2124-148-0x00000254719B0000-0x00000254719D2000-memory.dmp

Filesize
136KB

Download
memory/2124-167-0x0000025476C40000-0x0000025476C5E000-memory.dmp

Filesize
120KB

Download
memory/2124-138-0x0000025451E30000-0x0000025455664000-memory.dmp

Filesize
56.2MB

Download
memory/2124-139-0x00000254716C0000-0x00000254717CA000-memory.dmp

Filesize
1.0MB

Download
memory/2124-166-0x0000025476CE0000-0x0000025476D56000-memory.dmp

Filesize
472KB

Download
memory/2124-141-0x000002546FAE0000-0x000002546FAEC000-memory.dmp

Filesize
48KB

Download
memory/2124-142-0x000002546FAD0000-0x000002546FAE4000-memory.dmp

Filesize
80KB

Download
memory/2124-143-0x000002546FAF0000-0x000002546FB14000-memory.dmp

Filesize
144KB

Download
memory/2124-144-0x0000025471320000-0x000002547132A000-memory.dmp

Filesize
40KB

Download
memory/2124-145-0x00000254714A0000-0x00000254714CA000-memory.dmp

Filesize
168KB

Download
memory/2124-146-0x0000025471500000-0x00000254715B2000-memory.dmp

Filesize
712KB

Download
memory/2124-147-0x0000025471960000-0x00000254719B0000-memory.dmp

Filesize
320KB

Download
memory/2124-165-0x0000025476C00000-0x0000025476C0C000-memory.dmp

Filesize
48KB

Download
memory/2124-149-0x0000025471330000-0x000002547133A000-memory.dmp

Filesize
40KB

Download
memory/2124-153-0x00000254719E0000-0x0000025471CE0000-memory.dmp

Filesize
3.0MB

Download
memory/2124-155-0x00000254763D0000-0x00000254763D8000-memory.dmp

Filesize
32KB

Download
memory/2124-157-0x0000025475CE0000-0x0000025475CEE000-memory.dmp

Filesize
56KB

Download
memory/2124-156-0x0000025475D10000-0x0000025475D48000-memory.dmp

Filesize
224KB

Download
memory/2124-158-0x0000025475D00000-0x0000025475D08000-memory.dmp

Filesize
32KB

Download
memory/2124-159-0x0000025476E80000-0x0000025476E8A000-memory.dmp

Filesize
40KB

Download
memory/2124-160-0x0000025476EA0000-0x0000025476F02000-memory.dmp

Filesize
392KB

Download
memory/2124-161-0x0000025476F00000-0x0000025476F22000-memory.dmp

Filesize
136KB

Download
memory/2124-162-0x0000025477450000-0x0000025477978000-memory.dmp

Filesize
5.2MB

Download
memory/3576-118-0x0000000000400000-0x0000000002579000-memory.dmp

Filesize
33.5MB

Download
memory/3576-34-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3576-137-0x0000000000400000-0x0000000002579000-memory.dmp

Filesize
33.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads