stealc | e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6

Analysis

max time kernel
140s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
06-11-2023 18:30

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General

Target

e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe
Size

255KB
MD5

5783097490b0d30d010af114692b230d
SHA1

185ae2b2b974a83e97bdcb0598659d26af2bd714
SHA256

e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6
SHA512

83e43d888740b55b49ccc0ead79509837a24827ce57e2ae83d6e54b0b9d9c23bbcd0ccb82edb4a2dc399d6140907a20aa7e27196e31858ccd56c1d3b450717f5
SSDEEP

6144:L/8bNOErGJaIbrGlU+ac/oUoMPKm22mK3o:E8ErGJaGG6rVUoof

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

http://91.215.85.189

Attributes

url_path
/43851895e447afd7.php

rc4.plain

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
564	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe
564	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2072	564	WerFault.exe	84

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	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
564	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe
564	e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe

C:\Users\Admin\AppData\Local\Temp\e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe
"C:\Users\Admin\AppData\Local\Temp\e99f3824ab81860db9ae48fac88f7530d0b5a8a450e16d85580c9cc57d064ea6.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 564 -s 1968
  2⤵
  - Program crash
  PID:2072

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 564 -ip 564
1⤵
PID:380

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

Query Registry

T1012

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\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

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
memory/564-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/564-2-0x0000000002510000-0x000000000252B000-memory.dmp

Filesize
108KB

Download
memory/564-3-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/564-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/564-60-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/564-72-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/564-73-0x0000000002510000-0x000000000252B000-memory.dmp

Filesize
108KB

Download
memory/564-74-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download