stealc | 2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538

General

Target

2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe
Size

373KB
MD5

e597ca74882e1cc968d0c7b521be32ee
SHA1

2db14fd32de5d4ba0bc5761cf439825c1be730ab
SHA256

2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538
SHA512

e8cae5d440d6b30f17e7861f5f95ef6e90a4a89759e521d368ea88c1d6ee9f4ed9975a038f5b6b8563120131234b3503efe80a6f046e1da2ad6605347989cfd4
SSDEEP

6144:9Fse/HAftZpz74YMJdnm4RCvC37dmHMnTPjfrrRpX7zWXIyI32Tc2dI7f:9FseItZpz7FOm4IqmM7jf7Lz+IyxJuf

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes

url_path
/c698e1bc8a2f5e6d.php

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
3260	usc.0.exe

Loads dropped DLL 1 IoCs

pid	Process
3260	usc.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
2316	3260	WerFault.exe	82

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	usc.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	usc.0.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3260	usc.0.exe
3260	usc.0.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 3260	1020	2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe	82
PID 1020 wrote to memory of 3260	1020	2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe	82
PID 1020 wrote to memory of 3260	1020	2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe	82

C:\Users\Admin\AppData\Local\Temp\2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe
"C:\Users\Admin\AppData\Local\Temp\2a0211460b7997a1071acdebb700fa6e58e16f94c02371ef9cc2c2a72e8cb538.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Users\Admin\AppData\Local\Temp\usc.0.exe
  "C:\Users\Admin\AppData\Local\Temp\usc.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:3260
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 2100
    3⤵
    - Program crash
    PID:2316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3260 -ip 3260
1⤵
PID:5092

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

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

3

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\nss3.dll

Filesize
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

Filesize
231KB

MD5
8d1595054640e63c3ccc451b1454af73

SHA1
d3e67396b4afd81aeb7bf463e5c9dc654169fd7e

SHA256
b006c572d41bca024db5423a3ed281068ac751704ecfb558ec7866341559b628

SHA512
35d5b8ba33f1526148cf6c3e03b7e9c26738d596522ac923dd747a74eaeace0ef872b3ee69689ad110d5ffb4018489c000819e7862e72f6738369c745ccd3b76

Download Submit
memory/1020-53-0x00000000042B0000-0x000000000431C000-memory.dmp

Filesize
432KB

Download
memory/1020-1-0x00000000027C0000-0x00000000028C0000-memory.dmp

Filesize
1024KB

Download
memory/1020-3-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1020-2-0x00000000042B0000-0x000000000431C000-memory.dmp

Filesize
432KB

Download
memory/1020-16-0x0000000000400000-0x0000000002599000-memory.dmp

Filesize
33.6MB

Download
memory/1020-55-0x0000000000400000-0x000000000046F000-memory.dmp

Filesize
444KB

Download
memory/1020-51-0x00000000027C0000-0x00000000028C0000-memory.dmp

Filesize
1024KB

Download
memory/3260-14-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-18-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/3260-54-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-60-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-72-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-77-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-15-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-13-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-99-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download
memory/3260-101-0x0000000000400000-0x0000000002576000-memory.dmp

Filesize
33.5MB

Download

Analysis

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