stealc | a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 20:45

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General

Target

a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
Size

2.0MB
MD5

b392cef23cb5984e239e16bd6e7ed2f9
SHA1

f9429ba6c8e24b3f293cecc99fc2dfc6b1a4c5a4
SHA256

a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f
SHA512

421fb89400b7b914f1e9b84ecf9d11acc4b91372b71694e225770e2bc8a058b9e41c217f7e753b4b30e39f3336da47dece90f9925a12fd4c10bc83290428120d
SSDEEP

49152:LmMmR7UJ7lJvfFB3GGd4iVP5Jbhi/rSC4PLDBLkf9mpPjuEdpN:JmR7WTLd40P5u94D+fgpjH

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.exeBAECFCAAEC.exe

pid	Process
1992	syncUpd.exe
2568	BroomSetup.exe
3044	BAECFCAAEC.exe

Loads dropped DLL 9 IoCs

Processes:

a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exesyncUpd.execmd.exe

pid	Process
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
1992	syncUpd.exe
1992	syncUpd.exe
2752	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 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/files/0x0006000000016ccf-29.dat	upx
behavioral1/files/0x0006000000016ccf-36.dat	upx
behavioral1/memory/2568-38-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2568-85-0x0000000000400000-0x0000000000930000-memory.dmp	upx
behavioral1/memory/2568-179-0x0000000000400000-0x0000000000930000-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:

BAECFCAAEC.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ledger-Live Updater = "C:\\Users\\Admin\\AppData\\Local\\Temp\\BAECFCAAEC.exe"	BAECFCAAEC.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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
4	api.ipify.org

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
1216	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
2208	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

syncUpd.exeBAECFCAAEC.exe

pid	Process
1992	syncUpd.exe
1992	syncUpd.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe
3044	BAECFCAAEC.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

BAECFCAAEC.exe

description	pid	Process
Token: SeDebugPrivilege	3044	BAECFCAAEC.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

BroomSetup.exe

pid	Process
2568	BroomSetup.exe

Suspicious use of WriteProcessMemory 43 IoCs

Processes:

a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exeBroomSetup.execmd.exesyncUpd.execmd.exeBAECFCAAEC.execmd.exe

description	pid	Process	procid_target
PID 1152 wrote to memory of 1992	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	29
PID 1152 wrote to memory of 1992	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	29
PID 1152 wrote to memory of 1992	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	29
PID 1152 wrote to memory of 1992	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	29
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 1152 wrote to memory of 2568	1152	a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe	30
PID 2568 wrote to memory of 2872	2568	BroomSetup.exe	32
PID 2568 wrote to memory of 2872	2568	BroomSetup.exe	32
PID 2568 wrote to memory of 2872	2568	BroomSetup.exe	32
PID 2568 wrote to memory of 2872	2568	BroomSetup.exe	32
PID 2872 wrote to memory of 956	2872	cmd.exe	34
PID 2872 wrote to memory of 956	2872	cmd.exe	34
PID 2872 wrote to memory of 956	2872	cmd.exe	34
PID 2872 wrote to memory of 956	2872	cmd.exe	34
PID 2872 wrote to memory of 1216	2872	cmd.exe	35
PID 2872 wrote to memory of 1216	2872	cmd.exe	35
PID 2872 wrote to memory of 1216	2872	cmd.exe	35
PID 2872 wrote to memory of 1216	2872	cmd.exe	35
PID 1992 wrote to memory of 2752	1992	syncUpd.exe	38
PID 1992 wrote to memory of 2752	1992	syncUpd.exe	38
PID 1992 wrote to memory of 2752	1992	syncUpd.exe	38
PID 1992 wrote to memory of 2752	1992	syncUpd.exe	38
PID 1992 wrote to memory of 3032	1992	syncUpd.exe	39
PID 1992 wrote to memory of 3032	1992	syncUpd.exe	39
PID 1992 wrote to memory of 3032	1992	syncUpd.exe	39
PID 1992 wrote to memory of 3032	1992	syncUpd.exe	39
PID 2752 wrote to memory of 3044	2752	cmd.exe	42
PID 2752 wrote to memory of 3044	2752	cmd.exe	42
PID 2752 wrote to memory of 3044	2752	cmd.exe	42
PID 2752 wrote to memory of 3044	2752	cmd.exe	42
PID 3044 wrote to memory of 2092	3044	BAECFCAAEC.exe	43
PID 3044 wrote to memory of 2092	3044	BAECFCAAEC.exe	43
PID 3044 wrote to memory of 2092	3044	BAECFCAAEC.exe	43
PID 3044 wrote to memory of 2092	3044	BAECFCAAEC.exe	43
PID 2092 wrote to memory of 2208	2092	cmd.exe	45
PID 2092 wrote to memory of 2208	2092	cmd.exe	45
PID 2092 wrote to memory of 2208	2092	cmd.exe	45
PID 2092 wrote to memory of 2208	2092	cmd.exe	45

C:\Users\Admin\AppData\Local\Temp\a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe
"C:\Users\Admin\AppData\Local\Temp\a05ef9e826665bd2c27d3cc655d8d2146a02cd24e9a0296d50eec1edfc130f2f.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1152
- 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:1992
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\BAECFCAAEC.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:2752
  - - C:\Users\Admin\AppData\Local\Temp\BAECFCAAEC.exe
      "C:\Users\Admin\AppData\Local\Temp\BAECFCAAEC.exe"
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:3044
    - - 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\BAECFCAAEC.exe
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:2092
      - C:\Windows\SysWOW64\PING.EXE
        
        ping 2.2.2.2 -n 1 -w 3000
        6⤵
        Runs ping.exe
        
        PID:2208
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\AEGHJKJKKJ.exe"
    3⤵
    PID:3032
- 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:2568
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2872
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:956
  - - 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:1216

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\BAECFCAAEC.exe

Filesize
101KB

MD5
42b838cf8bdf67400525e128d917f6e0

SHA1
a578f6faec738912dba8c41e7abe1502c46d0cae

SHA256
0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

SHA512
f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

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

Filesize
1.3MB

MD5
ad20f8341d2d7e63580cda1cf35840aa

SHA1
7f5766a9582e40ccb3a86bc91df40e5ca1e5b098

SHA256
f9904cd04500e1d8aeafdc77d1f40c17d1a4741552aaf92b081abd97bfa54559

SHA512
d1159545c33f4aa0842eb13ea8d3e6685e7c258c1bb7ab746342472304814067c6541c8f4a936151fa3c24576cb6939b58ae7947c77c79f5d28445f44522fd34

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
1.4MB

MD5
b01dffe7e593e43b671cfce13e4b2611

SHA1
e999086922d208d7dd16ec32c394ef135979bf95

SHA256
911cd7eb83cce594b74634aab39d8eae72cad54573410980517371d1437f46ea

SHA512
236ae6ab1d1ea4766f946908e08a067ed4d4d18dccd50d5308e88092468bc92c68804fba5f3c5189fb9931fd58404d6669a68c2606ea72eea7ec1d9bf9bb4706

Download Submit
\Users\Admin\AppData\Local\Temp\nsdA0D4.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/1152-37-0x0000000004ED0000-0x0000000005400000-memory.dmp

Filesize
5.2MB

Download
memory/1152-35-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1992-43-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1992-44-0x0000000061E00000-0x0000000061EF3000-memory.dmp

Filesize
972KB

Download
memory/1992-125-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1992-81-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1992-42-0x00000000001B0000-0x00000000001D7000-memory.dmp

Filesize
156KB

Download
memory/1992-98-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1992-41-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1992-132-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1992-129-0x0000000000400000-0x000000000063B000-memory.dmp

Filesize
2.2MB

Download
memory/1992-116-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/2568-39-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2568-115-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2568-85-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2568-38-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/2568-179-0x0000000000400000-0x0000000000930000-memory.dmp

Filesize
5.2MB

Download
memory/3032-169-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/3044-147-0x0000000000080000-0x000000000009E000-memory.dmp

Filesize
120KB

Download
memory/3044-153-0x00000000727F0000-0x0000000072EDE000-memory.dmp

Filesize
6.9MB

Download
memory/3044-174-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download
memory/3044-181-0x00000000727F0000-0x0000000072EDE000-memory.dmp

Filesize
6.9MB

Download
memory/3044-182-0x0000000004D60000-0x0000000004DA0000-memory.dmp

Filesize
256KB

Download