stealc | f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13-03-2024 00:25

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General

Target

f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
Size

2.0MB
MD5

af528677e66608860208878377380fd9
SHA1

0414f65a08126c60ab802933d47de0f44487cfb0
SHA256

f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474
SHA512

4771c7606046ef28ddb960463728b27b4c518fe9879a52856a6d4c89bf3ef9e534a9ad14f820247242efa610575f6cf570d9f3c12d778f804879129181029126
SSDEEP

49152:LCani5uuCsnFsOVBPivSHGhkSmGqV9vqQiOK57WH7XCc:26i5uu3qOnPi8Gh3REvqQiOK+Lb

Score

10^/10

stealc discovery persistence spyware stealer upx

Malware Config

Extracted

Family

stealc

http://185.172.128.145

Attributes

url_path
/3cd2b41cbde8fc9c.php

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2992	syncUpd.exe
1528	BroomSetup.exe
2396	FIIJJKKFHI.exe

Loads dropped DLL 8 IoCs

pid	Process
1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
2992	syncUpd.exe
2992	syncUpd.exe
2996	cmd.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

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0006000000015cdb-79.dat	upx
behavioral1/memory/1724-78-0x0000000005240000-0x0000000005770000-memory.dmp	upx
behavioral1/files/0x0006000000015cdb-71.dat	upx
behavioral1/memory/1528-80-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/1528-116-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/1528-174-0x0000000000400000-0x0000000000930000-memory.dmp	upx

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\FIIJJKKFHI.exe"	FIIJJKKFHI.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

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2860	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
112	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2992	syncUpd.exe
2992	syncUpd.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe
2396	FIIJJKKFHI.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	FIIJJKKFHI.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1528	BroomSetup.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1724 wrote to memory of 2992	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	28
PID 1724 wrote to memory of 2992	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	28
PID 1724 wrote to memory of 2992	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	28
PID 1724 wrote to memory of 2992	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	28
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1724 wrote to memory of 1528	1724	f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe	31
PID 1528 wrote to memory of 1364	1528	BroomSetup.exe	32
PID 1528 wrote to memory of 1364	1528	BroomSetup.exe	32
PID 1528 wrote to memory of 1364	1528	BroomSetup.exe	32
PID 1528 wrote to memory of 1364	1528	BroomSetup.exe	32
PID 1364 wrote to memory of 1436	1364	cmd.exe	34
PID 1364 wrote to memory of 1436	1364	cmd.exe	34
PID 1364 wrote to memory of 1436	1364	cmd.exe	34
PID 1364 wrote to memory of 1436	1364	cmd.exe	34
PID 1364 wrote to memory of 2860	1364	cmd.exe	35
PID 1364 wrote to memory of 2860	1364	cmd.exe	35
PID 1364 wrote to memory of 2860	1364	cmd.exe	35
PID 1364 wrote to memory of 2860	1364	cmd.exe	35
PID 2992 wrote to memory of 2996	2992	syncUpd.exe	38
PID 2992 wrote to memory of 2996	2992	syncUpd.exe	38
PID 2992 wrote to memory of 2996	2992	syncUpd.exe	38
PID 2992 wrote to memory of 2996	2992	syncUpd.exe	38
PID 2992 wrote to memory of 448	2992	syncUpd.exe	40
PID 2992 wrote to memory of 448	2992	syncUpd.exe	40
PID 2992 wrote to memory of 448	2992	syncUpd.exe	40
PID 2992 wrote to memory of 448	2992	syncUpd.exe	40
PID 2996 wrote to memory of 2396	2996	cmd.exe	42
PID 2996 wrote to memory of 2396	2996	cmd.exe	42
PID 2996 wrote to memory of 2396	2996	cmd.exe	42
PID 2996 wrote to memory of 2396	2996	cmd.exe	42
PID 2396 wrote to memory of 1952	2396	FIIJJKKFHI.exe	43
PID 2396 wrote to memory of 1952	2396	FIIJJKKFHI.exe	43
PID 2396 wrote to memory of 1952	2396	FIIJJKKFHI.exe	43
PID 2396 wrote to memory of 1952	2396	FIIJJKKFHI.exe	43
PID 1952 wrote to memory of 112	1952	cmd.exe	45
PID 1952 wrote to memory of 112	1952	cmd.exe	45
PID 1952 wrote to memory of 112	1952	cmd.exe	45
PID 1952 wrote to memory of 112	1952	cmd.exe	45

C:\Users\Admin\AppData\Local\Temp\f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe
"C:\Users\Admin\AppData\Local\Temp\f31521168ba53bf2cfaa451586a8115500e52c948787e5e112f4c8fbd350b474.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  C:\Users\Admin\AppData\Local\Temp\syncUpd.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\FIIJJKKFHI.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2996
  - - C:\Users\Admin\AppData\Local\Temp\FIIJJKKFHI.exe
      "C:\Users\Admin\AppData\Local\Temp\FIIJJKKFHI.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2396
    - - 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\FIIJJKKFHI.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1952
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:112
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\JJECGCBGDB.exe"
    3⤵
    PID:448
- C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  C:\Users\Admin\AppData\Local\Temp\BroomSetup.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1528
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1364
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:1436
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /tn "MalayamaraUpdate" /tr "'C:\Users\Admin\AppData\Local\Temp\Updater.exe'" /sc minute /mo 30 /F
      4⤵
      Creates scheduled task(s)
      PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

Remote System Discovery

T1018

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:\Users\Admin\AppData\Local\Temp\BroomSetup.exe

Filesize
350KB

MD5
3cd5d293b814926ff5dbac4a01335e7e

SHA1
e2ec65bc68416e71da60060ae7dbaf305584b9ed

SHA256
6e5bd4835f8b46181a664872ddf98160d8cbfde2c6931ad86d6577ec6e6b323a

SHA512
9bf3875cb81940f42b87eb3721036ff62479629696453e8ce4459943c11155bffd72310f0f7d72509f4836891af38427705f64940d5d6149b25ddf0738e7c6c9

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

Filesize
101KB

MD5
42b838cf8bdf67400525e128d917f6e0

SHA1
a578f6faec738912dba8c41e7abe1502c46d0cae

SHA256
0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

SHA512
f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

Download Submit
C:\Users\Admin\AppData\Roaming\Temp\Task.bat

Filesize
128B

MD5
11bb3db51f701d4e42d3287f71a6a43e

SHA1
63a4ee82223be6a62d04bdfe40ef8ba91ae49a86

SHA256
6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331

SHA512
907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2

Download Submit
\ProgramData\mozglue.dll

Filesize
593KB

MD5
c8fd9be83bc728cc04beffafc2907fe9

SHA1
95ab9f701e0024cedfbd312bcfe4e726744c4f2e

SHA256
ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

SHA512
fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

Download Submit
\ProgramData\nss3.dll

Filesize
968KB

MD5
20e837214fd2a2e05372a90ef0a15f8f

SHA1
6bc0649d316937051171caae4106e91dae3692a8

SHA256
134fd655a3dbff1828ec5f308552cd1f64be8705929b2e16e55c5aff9ff6a35b

SHA512
d29c671761daff93f8c4932f45430aee1776c9c7a88f948c3b7b569d2fba1425a41e3715016d0e27437295919b0743d5fff036d7ca486b8aaadd5702d3ce17fc

Download Submit
\Users\Admin\AppData\Local\Temp\BroomSetup.exe

Filesize
399KB

MD5
9fb949cd84171cf485cc92115d39df1e

SHA1
41066e2440f55ad2806274e231fed955f05d51e6

SHA256
b3665961d508817e95b81fc2ba51760fb3c309b84447d3e497493dcb6b45fccb

SHA512
eb6b9e6bca7a062041d313a33feabcd7e96cf4ceb6be10bc03a5b17ebc9fa4982bddc79274a11cb2a9f1a44c8beb1c67c5860f67c46ed194fbcab3d5e855bb98

Download Submit
\Users\Admin\AppData\Local\Temp\nst1863.tmp\INetC.dll

Filesize
21KB

MD5
2b342079303895c50af8040a91f30f71

SHA1
b11335e1cb8356d9c337cb89fe81d669a69de17e

SHA256
2d5d89025911e2e273f90f393624be4819641dbee1606de792362e442e54612f

SHA512
550452dadc86ecd205f40668894116790a456fe46e9985d68093d36cf32abf00edecb5c56ff0287464a0e819db7b3cc53926037a116de6c651332a7cc8035d47

Download Submit
\Users\Admin\AppData\Local\Temp\syncUpd.exe

Filesize
200KB

MD5
c722591f624fb69970f246b8c81d830f

SHA1
85516decea5d6987bebe39cbadf36053beaf4bb0

SHA256
13cd1152a19fdac6581cac2bd822f34bd3026ea1783ff231e299b6d28c046a6a

SHA512
822584c5c8a0813af4d845e80919776c71a43464ab719d1c303ebaae6a8ed47763183566bedc9be2e8c44de8ee6fd62d1e12be471e5d5c73ae4b1dcdaa34a908

Download Submit
memory/448-165-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/1528-174-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/1528-116-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/1528-81-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1528-119-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1528-80-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/1724-19-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1724-77-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1724-78-0x0000000005240000-0x0000000005770000-memory.dmp

Filesize
5.2MB

Download
memory/2396-161-0x0000000000F20000-0x0000000000F3E000-memory.dmp

Filesize
120KB

Download
memory/2396-163-0x00000000723A0000-0x0000000072A8E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-168-0x00000000006A0000-0x00000000006E0000-memory.dmp

Filesize
256KB

Download
memory/2396-175-0x00000000723A0000-0x0000000072A8E000-memory.dmp

Filesize
6.9MB

Download
memory/2396-178-0x00000000006A0000-0x00000000006E0000-memory.dmp

Filesize
256KB

Download
memory/2992-51-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-115-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-125-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-126-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/2992-64-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-56-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-55-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/2992-21-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/2992-20-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-18-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/2992-17-0x0000000000250000-0x0000000000277000-memory.dmp

Filesize
156KB

Download
memory/2992-16-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download