stealc | f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5

Analysis

max time kernel
150s
max time network
121s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 22:30

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General

Target

f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
Size

2.0MB
MD5

52d78c73f0fb6e1daddb8e93b3f8e0c7
SHA1

d570b9d58db893970b382ed0249d29c4b5c5db7d
SHA256

f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5
SHA512

2eaee518332e9d0011cfd7d7ddfd73c97aea6b0935ee9b167e86d64f16e85f836047d2770f76782aefe7415041111b3617381de43927b99dd558fb667f11112e
SSDEEP

49152:LUGPIYLN0N6ut06Rpafm2XQnGZFiNV0maQtjUJcI3h0oib4YHRM:GYB+HB1mZFMfaQtj4R3Woinu

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

Processes:

syncUpd.exeBroomSetup.exeBAAFBFBAAK.exe

pid	Process
108	syncUpd.exe
2800	BroomSetup.exe
2212	BAAFBFBAAK.exe

Loads dropped DLL 8 IoCs

Processes:

f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exesyncUpd.execmd.exe

pid	Process
2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
108	syncUpd.exe
108	syncUpd.exe
2236	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 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/files/0x000800000001469d-28.dat	upx
behavioral1/memory/2800-30-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/files/0x000800000001469d-21.dat	upx
behavioral1/memory/2800-80-0x0000000000400000-0x0000000000930000-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

Processes:

BAAFBFBAAK.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\BAAFBFBAAK.exe"	BAAFBFBAAK.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

Processes:

syncUpd.exe

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

Processes:

schtasks.exe

pid	Process
2436	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
592	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

syncUpd.exeBAAFBFBAAK.exe

pid	Process
108	syncUpd.exe
108	syncUpd.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe
2212	BAAFBFBAAK.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

BAAFBFBAAK.exe

description	pid	Process
Token: SeDebugPrivilege	2212	BAAFBFBAAK.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

BroomSetup.exe

pid	Process
2800	BroomSetup.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exeBroomSetup.execmd.exesyncUpd.execmd.exeBAAFBFBAAK.execmd.exe

description	pid	Process	procid_target
PID 2984 wrote to memory of 108	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	28
PID 2984 wrote to memory of 108	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	28
PID 2984 wrote to memory of 108	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	28
PID 2984 wrote to memory of 108	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	28
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2984 wrote to memory of 2800	2984	f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe	29
PID 2800 wrote to memory of 2460	2800	BroomSetup.exe	30
PID 2800 wrote to memory of 2460	2800	BroomSetup.exe	30
PID 2800 wrote to memory of 2460	2800	BroomSetup.exe	30
PID 2800 wrote to memory of 2460	2800	BroomSetup.exe	30
PID 2460 wrote to memory of 2884	2460	cmd.exe	32
PID 2460 wrote to memory of 2884	2460	cmd.exe	32
PID 2460 wrote to memory of 2884	2460	cmd.exe	32
PID 2460 wrote to memory of 2884	2460	cmd.exe	32
PID 2460 wrote to memory of 2436	2460	cmd.exe	33
PID 2460 wrote to memory of 2436	2460	cmd.exe	33
PID 2460 wrote to memory of 2436	2460	cmd.exe	33
PID 2460 wrote to memory of 2436	2460	cmd.exe	33
PID 108 wrote to memory of 2236	108	syncUpd.exe	35
PID 108 wrote to memory of 2236	108	syncUpd.exe	35
PID 108 wrote to memory of 2236	108	syncUpd.exe	35
PID 108 wrote to memory of 2236	108	syncUpd.exe	35
PID 108 wrote to memory of 2996	108	syncUpd.exe	37
PID 108 wrote to memory of 2996	108	syncUpd.exe	37
PID 108 wrote to memory of 2996	108	syncUpd.exe	37
PID 108 wrote to memory of 2996	108	syncUpd.exe	37
PID 2236 wrote to memory of 2212	2236	cmd.exe	39
PID 2236 wrote to memory of 2212	2236	cmd.exe	39
PID 2236 wrote to memory of 2212	2236	cmd.exe	39
PID 2236 wrote to memory of 2212	2236	cmd.exe	39
PID 2212 wrote to memory of 1852	2212	BAAFBFBAAK.exe	40
PID 2212 wrote to memory of 1852	2212	BAAFBFBAAK.exe	40
PID 2212 wrote to memory of 1852	2212	BAAFBFBAAK.exe	40
PID 2212 wrote to memory of 1852	2212	BAAFBFBAAK.exe	40
PID 1852 wrote to memory of 592	1852	cmd.exe	42
PID 1852 wrote to memory of 592	1852	cmd.exe	42
PID 1852 wrote to memory of 592	1852	cmd.exe	42
PID 1852 wrote to memory of 592	1852	cmd.exe	42

C:\Users\Admin\AppData\Local\Temp\f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe
"C:\Users\Admin\AppData\Local\Temp\f6413b5d8f120b1a1db8380b01f6e7bc8c641bb4d44e03e9d62607336c2ef0d5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2984
- 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:108
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\BAAFBFBAAK.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Users\Admin\AppData\Local\Temp\BAAFBFBAAK.exe
      "C:\Users\Admin\AppData\Local\Temp\BAAFBFBAAK.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2212
    - - 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\BAAFBFBAAK.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1852
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:592
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\IDBAKKECAE.exe"
    3⤵
    PID:2996
- 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:2800
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2460
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:2884
  - - 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:2436

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\BAAFBFBAAK.exe

Filesize
101KB

MD5
42b838cf8bdf67400525e128d917f6e0

SHA1
a578f6faec738912dba8c41e7abe1502c46d0cae

SHA256
0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

SHA512
f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

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

Filesize
1.7MB

MD5
6a5b6c7c3b3e4c90dcfa552bb2dc97cc

SHA1
b182599620423dc1cde0d248cf06e92691cd3343

SHA256
0f9a553035de3059c9f0571b638df4fd9881fd0007ec455a1abd5ac796dcd91f

SHA512
62fbf9d3d5ff607cc7134ec3050a3b77366ff496fdb540b95faac1966290f6ccecee4a4ddfbb2f8b96e31b8cc9b40d05d3cab4d8ec8787cb32d1762e953f197c

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
2.0MB

MD5
1cc453cdf74f31e4d913ff9c10acdde2

SHA1
6e85eae544d6e965f15fa5c39700fa7202f3aafe

SHA256
ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

SHA512
dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

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

Filesize
1.7MB

MD5
eee5ddcffbed16222cac0a1b4e2e466e

SHA1
28b40c88b8ea50b0782e2bcbb4cc0f411035f3d5

SHA256
2a40e5dccc7526c4982334941c90f95374460e2a816e84e724e98c4d52ae8c54

SHA512
8f88901f3ebd425818db09f268df19ccf8a755603f04e9481bcf02b112a84393f8a900ead77f8f971bfa33fd9fa5636b7494aaee864a0fb04e3273911a4216dc

Download Submit
\Users\Admin\AppData\Local\Temp\nst25CB.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/108-44-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/108-111-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/108-35-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/108-33-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/108-34-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/108-79-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/108-115-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/108-114-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/108-85-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/108-86-0x0000000000220000-0x0000000000247000-memory.dmp

Filesize
156KB

Download
memory/108-88-0x0000000000800000-0x0000000000900000-memory.dmp

Filesize
1024KB

Download
memory/2212-123-0x0000000004E30000-0x0000000004E70000-memory.dmp

Filesize
256KB

Download
memory/2212-129-0x0000000004E30000-0x0000000004E70000-memory.dmp

Filesize
256KB

Download
memory/2212-128-0x00000000723D0000-0x0000000072ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2212-121-0x00000000009E0000-0x00000000009FE000-memory.dmp

Filesize
120KB

Download
memory/2212-122-0x00000000723D0000-0x0000000072ABE000-memory.dmp

Filesize
6.9MB

Download
memory/2800-32-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2800-84-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2800-80-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2800-30-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2984-27-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/2984-29-0x00000000053A0000-0x00000000058D0000-memory.dmp

Filesize
5.2MB

Download