stealc | 272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1

General

Target

272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
Size

286KB
MD5

da84940be266032678f66021f5e028ec
SHA1

ac7ae700a7e1b5e5ab90b0a10f2001a5bfde0db2
SHA256

272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1
SHA512

13987ec104feac64b64f5c1b04b6f4bf45e798d938045a42091e82ff4acf4ce3fd1b557a228896f9cea8b0718ffcb7b5a765ffcf004596bb1746d54a4fe5c51f
SSDEEP

3072:JKTN28++LlAwR+npdKg5rJya0nm6sTkIaIGUJgIs9XOwdA:40tWa5VgvIaUJ3s9X7

Score

10^/10

stealc discovery spyware stealer

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.26

Attributes

url_path
/f993692117a3fda2.php

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1088	CGIJJKEHCA.exe

Loads dropped DLL 2 IoCs

pid	Process
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.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
4824	4720	WerFault.exe	77

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	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3004	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4720 wrote to memory of 5040	4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe	78
PID 4720 wrote to memory of 5040	4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe	78
PID 4720 wrote to memory of 5040	4720	272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe	78
PID 5040 wrote to memory of 1088	5040	cmd.exe	82
PID 5040 wrote to memory of 1088	5040	cmd.exe	82
PID 5040 wrote to memory of 1088	5040	cmd.exe	82
PID 1088 wrote to memory of 2432	1088	CGIJJKEHCA.exe	84
PID 1088 wrote to memory of 2432	1088	CGIJJKEHCA.exe	84
PID 1088 wrote to memory of 2432	1088	CGIJJKEHCA.exe	84
PID 2432 wrote to memory of 3004	2432	cmd.exe	86
PID 2432 wrote to memory of 3004	2432	cmd.exe	86
PID 2432 wrote to memory of 3004	2432	cmd.exe	86

C:\Users\Admin\AppData\Local\Temp\272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe
"C:\Users\Admin\AppData\Local\Temp\272233c4dd1c4d2455a7d6ac2c29f9c7b0af369d1ea516b4456ea757493e6df1.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\CGIJJKEHCA.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5040
- - C:\Users\Admin\AppData\Local\Temp\CGIJJKEHCA.exe
    "C:\Users\Admin\AppData\Local\Temp\CGIJJKEHCA.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1088
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\CGIJJKEHCA.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2432
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        5⤵
        Runs ping.exe
        
        PID:3004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 2544
  2⤵
  - Program crash
  PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4720 -ip 4720
1⤵
PID:1796

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

Remote System Discovery

1

T1018

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\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\CGIJJKEHCA.exe

Filesize
106KB

MD5
fe380780b5c35bd6d54541791151c2be

SHA1
7fe3a583cf91474c733f85cebf3c857682e269e1

SHA256
b64a84d1f88e4e78464a1901c1cb5bbd5f00bb73203d719e64e072157a087b53

SHA512
ba05ba8aa13c4bc1cf98fbf6c08b021e8b19354098e0397fc8e1e5d3dcce367c1063203f24e50d0973193f6535681d0a43486e5dade5d112853b7a2fe8739b6c

Download Submit
memory/1088-91-0x0000000000320000-0x0000000000340000-memory.dmp

Filesize
128KB

Download
memory/1088-92-0x0000000071D10000-0x00000000724C1000-memory.dmp

Filesize
7.7MB

Download
memory/1088-93-0x0000000004D50000-0x0000000004D60000-memory.dmp

Filesize
64KB

Download
memory/1088-97-0x0000000071D10000-0x00000000724C1000-memory.dmp

Filesize
7.7MB

Download
memory/4720-4-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/4720-3-0x0000000000400000-0x0000000000AF1000-memory.dmp

Filesize
6.9MB

Download
memory/4720-84-0x0000000000400000-0x0000000000AF1000-memory.dmp

Filesize
6.9MB

Download
memory/4720-2-0x0000000002940000-0x0000000002967000-memory.dmp

Filesize
156KB

Download
memory/4720-1-0x0000000000C50000-0x0000000000D50000-memory.dmp

Filesize
1024KB

Download
memory/4720-95-0x0000000000400000-0x0000000000AF1000-memory.dmp

Filesize
6.9MB

Download

Analysis

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