stealc | 60af68dc8e940dae29691baa206ab9638bcff227b814c6cc33420edc0b3ac80b

General

Target

0b9795bc5978c62899793b157271e979.exe
Size

419KB
MD5

0b9795bc5978c62899793b157271e979
SHA1

d31405a2caf535d882fe873473df1badd7d5d028
SHA256

60af68dc8e940dae29691baa206ab9638bcff227b814c6cc33420edc0b3ac80b
SHA512

ba7054eaa9ae5eb5a17fbb30a9ed0200cc11fee439d7795b6e78ea8fce3c5592ed6710eac1ecf5396ece510cf4972ae870e16de38af17580586cc39d0ad2387e
SSDEEP

12288:K3r16Nwm9j++TwWOQzHfFlQps+QMUoF9AFs7:K71wF++TLOYFl9MUo7AFs7

Score

10^/10

stealc default discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://92.255.57.89

Attributes

url_path
/45c616e921a794b8.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	0b9795bc5978c62899793b157271e979.exe

Executes dropped EXE 1 IoCs

pid	Process
1612	CCB6.tmp.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 1 IoCs

pid	pid_target	Process	procid_target
4876	1612	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0b9795bc5978c62899793b157271e979.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CCB6.tmp.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	CCB6.tmp.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	CCB6.tmp.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1612	CCB6.tmp.exe
1612	CCB6.tmp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3380	0b9795bc5978c62899793b157271e979.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3380	0b9795bc5978c62899793b157271e979.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3380 wrote to memory of 1612	3380	0b9795bc5978c62899793b157271e979.exe	87
PID 3380 wrote to memory of 1612	3380	0b9795bc5978c62899793b157271e979.exe	87
PID 3380 wrote to memory of 1612	3380	0b9795bc5978c62899793b157271e979.exe	87

C:\Users\Admin\AppData\Local\Temp\0b9795bc5978c62899793b157271e979.exe
"C:\Users\Admin\AppData\Local\Temp\0b9795bc5978c62899793b157271e979.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3380
- C:\Users\Admin\AppData\Local\Temp\CCB6.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\CCB6.tmp.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:1612
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 1304
    3⤵
    - Program crash
    PID:4876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1612 -ip 1612
1⤵
PID:1916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CCB6.tmp.exe

Filesize
296KB

MD5
017e73f6839555aa663a62235a81b433

SHA1
212a9b2425a3b7ea5861dfc8204847bf5872d0be

SHA256
41c2c33823d372f8389b978fdaef60eb6d02aea21bf20b1aad7a11bde5f5dca8

SHA512
c6ec29111019290c60202053674725b6cd978c599843d7e7eeef9482809ec9edbca18b5181b764a9dab2e3c9e5a76f34b8841e1b2fa6ebffa0c52a4588023641

Download Submit
memory/1612-28-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download
memory/1612-29-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download
memory/1612-30-0x0000000000400000-0x0000000000821000-memory.dmp

Filesize
4.1MB

Download
memory/3380-1-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/3380-2-0x00000000025B0000-0x0000000002615000-memory.dmp

Filesize
404KB

Download
memory/3380-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3380-10-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/3380-15-0x00000000025B0000-0x0000000002615000-memory.dmp

Filesize
404KB

Download
memory/3380-14-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download
memory/3380-26-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/3380-31-0x0000000000400000-0x0000000000840000-memory.dmp

Filesize
4.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads