stealc | 72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2

Analysis

max time kernel
137s
max time network
138s
platform
windows11-21h2_x64
resource
win11-20240508-en
resource tags

arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system
submitted
09-05-2024 16:30

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General

Target

72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe
Size

384KB
MD5

642ee754e2e9ed42d93b0f942374089c
SHA1

7df1eca67d315d7caab990474086e980d63724c3
SHA256

72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2
SHA512

05bb11efcff946adbfd53ce24dba108dc736e8b5eec808d977903d37f9e64d9d7717c795765cc8ed200034d601d6c27b724c97791b90016088d388fcc224e222
SSDEEP

6144:CvNcF7Kk1SAa5i2mfLPrzOMWRTco+7ASGdHhyUZwS/:CvNo+nAa5gnXo+c8aT/

Score

10^/10

stealc zgrat discovery rat 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/484-67-0x0000019CC4250000-0x0000019CC7A84000-memory.dmp	family_zgrat_v1
behavioral2/memory/484-68-0x0000019CE2250000-0x0000019CE235A000-memory.dmp	family_zgrat_v1
behavioral2/memory/484-72-0x0000019CC98E0000-0x0000019CC9904000-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
4292	u2l4.0.exe
4896	u2l4.1.exe

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
2124	3352	WerFault.exe	79
1148	4292	WerFault.exe	82

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	u2l4.1.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2l4.1.exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	u2l4.1.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	u2l4.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	u2l4.0.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
4292	u2l4.0.exe
4292	u2l4.0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	484	SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe

Suspicious use of FindShellTrayWindow 7 IoCs

pid	Process
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe

Suspicious use of SendNotifyMessage 7 IoCs

pid	Process
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe
4896	u2l4.1.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3352 wrote to memory of 4292	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	82
PID 3352 wrote to memory of 4292	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	82
PID 3352 wrote to memory of 4292	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	82
PID 3352 wrote to memory of 4896	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	85
PID 3352 wrote to memory of 4896	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	85
PID 3352 wrote to memory of 4896	3352	72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe	85
PID 4896 wrote to memory of 484	4896	u2l4.1.exe	90
PID 4896 wrote to memory of 484	4896	u2l4.1.exe	90

C:\Users\Admin\AppData\Local\Temp\72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe
"C:\Users\Admin\AppData\Local\Temp\72f2648a4109f589ff722f22632164bacb30fd4985d876f5901907233a5e99a2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Users\Admin\AppData\Local\Temp\u2l4.0.exe
  "C:\Users\Admin\AppData\Local\Temp\u2l4.0.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4292
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 1392
    3⤵
    - Program crash
    PID:1148
- C:\Users\Admin\AppData\Local\Temp\u2l4.1.exe
  "C:\Users\Admin\AppData\Local\Temp\u2l4.1.exe"
  2⤵
  - Executes dropped EXE
  - Checks SCSI registry key(s)
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:4896
- - 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:484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3352 -s 1532
  2⤵
  - Program crash
  PID:2124

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 3352 -ip 3352
1⤵
PID:692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4292 -ip 4292
1⤵
PID:2312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
3KB

MD5
fd76c0b384422604655a57800796b24c

SHA1
afbf1ac4085f141096d971cbc2e8b2597895969a

SHA256
9b645cff5bed20cdad72b2a7b8f9109dd04ba9d56a987811f78f429e0a27605a

SHA512
0e9d02c6eb418603c2b007fcb9713764c9b7b2af5a39fb51abf6d06f43071591d4bfdc1647210774613279f4d0ef49b3a106ebf65c204eea8053840b3e8186cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2l4.0.exe

Filesize
217KB

MD5
1485fe25a6d2bc50d097656c434822f1

SHA1
b8a4f204a92bad32df0e6af82a4ae04d71910ba9

SHA256
044d3469fd7a09f42ba4d342604e002f0ba770528747ba6d3cb7c4b77a975be6

SHA512
18346906dd80342281579602860c514f8e535bf25b3a0f1abe56f08aab52f203323b8d279e8df7c3723acf989aa0d438866675c22095386f8632a543b5dceaf0

Download Submit
C:\Users\Admin\AppData\Local\Temp\u2l4.1.exe

Filesize
4.6MB

MD5
397926927bca55be4a77839b1c44de6e

SHA1
e10f3434ef3021c399dbba047832f02b3c898dbd

SHA256
4f07e1095cc915b2d46eb149d1c3be14f3f4b4bd2742517265947fd23bdca5a7

SHA512
cf54136b977fc8af7e8746d78676d0d464362a8cfa2213e392487003b5034562ee802e6911760b98a847bddd36ad664f32d849af84d7e208d4648bd97a2fa954

Download Submit
memory/484-74-0x0000019CE24B0000-0x0000019CE24DA000-memory.dmp

Filesize
168KB

Download
memory/484-96-0x0000019CE7420000-0x0000019CE743E000-memory.dmp

Filesize
120KB

Download
memory/484-75-0x0000019CE24E0000-0x0000019CE2592000-memory.dmp

Filesize
712KB

Download
memory/484-76-0x0000019CE25E0000-0x0000019CE2630000-memory.dmp

Filesize
320KB

Download
memory/484-95-0x0000019CE74C0000-0x0000019CE7536000-memory.dmp

Filesize
472KB

Download
memory/484-94-0x0000019CE70E0000-0x0000019CE70EC000-memory.dmp

Filesize
48KB

Download
memory/484-91-0x0000019CE7920000-0x0000019CE7E48000-memory.dmp

Filesize
5.2MB

Download
memory/484-90-0x0000019CE73D0000-0x0000019CE73F2000-memory.dmp

Filesize
136KB

Download
memory/484-89-0x0000019CE7370000-0x0000019CE73D2000-memory.dmp

Filesize
392KB

Download
memory/484-88-0x0000019CE70C0000-0x0000019CE70CA000-memory.dmp

Filesize
40KB

Download
memory/484-67-0x0000019CC4250000-0x0000019CC7A84000-memory.dmp

Filesize
56.2MB

Download
memory/484-68-0x0000019CE2250000-0x0000019CE235A000-memory.dmp

Filesize
1.0MB

Download
memory/484-70-0x0000019CC98C0000-0x0000019CC98CC000-memory.dmp

Filesize
48KB

Download
memory/484-77-0x0000019CE2630000-0x0000019CE2652000-memory.dmp

Filesize
136KB

Download
memory/484-71-0x0000019CC98B0000-0x0000019CC98C4000-memory.dmp

Filesize
80KB

Download
memory/484-72-0x0000019CC98E0000-0x0000019CC9904000-memory.dmp

Filesize
144KB

Download
memory/484-73-0x0000019CE2020000-0x0000019CE202A000-memory.dmp

Filesize
40KB

Download
memory/484-87-0x0000019CE69D0000-0x0000019CE69D8000-memory.dmp

Filesize
32KB

Download
memory/484-86-0x0000019CE69B0000-0x0000019CE69BE000-memory.dmp

Filesize
56KB

Download
memory/484-85-0x0000019CE69E0000-0x0000019CE6A18000-memory.dmp

Filesize
224KB

Download
memory/484-69-0x0000019CC9890000-0x0000019CC98A0000-memory.dmp

Filesize
64KB

Download
memory/484-78-0x0000019CC9830000-0x0000019CC983A000-memory.dmp

Filesize
40KB

Download
memory/484-82-0x0000019CE2660000-0x0000019CE2960000-memory.dmp

Filesize
3.0MB

Download
memory/484-84-0x0000019CE70A0000-0x0000019CE70A8000-memory.dmp

Filesize
32KB

Download
memory/3352-2-0x0000000002FB0000-0x000000000301C000-memory.dmp

Filesize
432KB

Download
memory/3352-36-0x0000000002FB0000-0x000000000301C000-memory.dmp

Filesize
432KB

Download
memory/3352-1-0x0000000002DB0000-0x0000000002EB0000-memory.dmp

Filesize
1024KB

Download
memory/3352-35-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/3352-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/3352-16-0x0000000000400000-0x0000000002B1E000-memory.dmp

Filesize
39.1MB

Download
memory/3352-37-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/4292-63-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4292-104-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4292-98-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4292-100-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4292-102-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4292-106-0x0000000000400000-0x0000000002AF3000-memory.dmp

Filesize
38.9MB

Download
memory/4896-53-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download
memory/4896-66-0x0000000000400000-0x00000000008AD000-memory.dmp

Filesize
4.7MB

Download