stealc | 2515eaa2524af3e606406d5e0b7d20565d6c1a2a06903a4ff0d0fceaba7414b8

Analysis

max time kernel
146s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 01:16

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General

Target
0141234b91988ec9abae7f93fa083835.exe
Size 299KB
Sample240221-bmsstsha3v
SHA256 2515eaa2524af3e606406d5e0b7d20565d6c1a2a06903a4ff0d0fceaba7414b8
MD5 0141234b91988ec9abae7f93fa083835
SHA1 233bb6dccd5398637420312eebdc79c77ec2c6be
SHA512 d81765d14dedfbc341f1b02d6688a13753d6724e4861bccead9bf3a7a2dd427001d3df492962aa639740130f8d11463074fa2edb3b602764e10571aba015ba53
SSDEEP 6144:WSWXZbqf5jOI9ldcNqqDrlXI5uLbzA1XD36XKI:WLXZbqhjOI9lqNRDreuAQt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealc discovery spyware stealer

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 2 IoCs

pid	Process
2728	unk.0.exe
1480	unk.1.exe

Loads dropped DLL 11 IoCs

pid	Process
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
848	0141234b91988ec9abae7f93fa083835.exe
2728	unk.0.exe
2728	unk.0.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

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	unk.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	unk.0.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
1952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2728	unk.0.exe
2728	unk.0.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1480	unk.1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 848 wrote to memory of 2728	848	0141234b91988ec9abae7f93fa083835.exe	28
PID 848 wrote to memory of 2728	848	0141234b91988ec9abae7f93fa083835.exe	28
PID 848 wrote to memory of 2728	848	0141234b91988ec9abae7f93fa083835.exe	28
PID 848 wrote to memory of 2728	848	0141234b91988ec9abae7f93fa083835.exe	28
PID 848 wrote to memory of 1480	848	0141234b91988ec9abae7f93fa083835.exe	29
PID 848 wrote to memory of 1480	848	0141234b91988ec9abae7f93fa083835.exe	29
PID 848 wrote to memory of 1480	848	0141234b91988ec9abae7f93fa083835.exe	29
PID 848 wrote to memory of 1480	848	0141234b91988ec9abae7f93fa083835.exe	29
PID 1480 wrote to memory of 1688	1480	unk.1.exe	31
PID 1480 wrote to memory of 1688	1480	unk.1.exe	31
PID 1480 wrote to memory of 1688	1480	unk.1.exe	31
PID 1480 wrote to memory of 1688	1480	unk.1.exe	31
PID 1688 wrote to memory of 1300	1688	cmd.exe	33
PID 1688 wrote to memory of 1300	1688	cmd.exe	33
PID 1688 wrote to memory of 1300	1688	cmd.exe	33
PID 1688 wrote to memory of 1300	1688	cmd.exe	33
PID 1688 wrote to memory of 1952	1688	cmd.exe	34
PID 1688 wrote to memory of 1952	1688	cmd.exe	34
PID 1688 wrote to memory of 1952	1688	cmd.exe	34
PID 1688 wrote to memory of 1952	1688	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\0141234b91988ec9abae7f93fa083835.exe
"C:\Users\Admin\AppData\Local\Temp\0141234b91988ec9abae7f93fa083835.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:848
- C:\Users\Admin\AppData\Local\Temp\unk.0.exe
  "C:\Users\Admin\AppData\Local\Temp\unk.0.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2728
- C:\Users\Admin\AppData\Local\Temp\unk.1.exe
  "C:\Users\Admin\AppData\Local\Temp\unk.1.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1480
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Roaming\Temp\Task.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - C:\Windows\SysWOW64\chcp.com
      chcp 1251
      4⤵
      PID:1300
  - - 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:1952

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

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

unk.1.exe

Path C:\Users\Admin\AppData\Local\Temp\unk.1.exe
Size 1.5MB
SHA256 fcc02f50a6ca461eb913f124ac1c91d27dac97a35e0635a9f1fcde7a0ac271eb
MD5 3580739c4ee375767c84ea1a48e001df
SHA1 5e674eae7262ceff291d222cc7efb795e7d87f67
SHA512 092825f4714e103b5aca14120a744e2fa6747addbbfce37321e6e5c1468b66d831fa7c2418da2e85177dc9ef4526477233ce51e59f894a8787ce899db916d728
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/IBhAbGHNhj:90oSiZA
MD5 SHA1 SHA512 SSDEEP

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unk.1.exe

Path C:\Users\Admin\AppData\Local\Temp\unk.1.exe
Size 1.2MB
SHA256 858cee06cde2f6d206c1e2d7886f9301be2ff6fe298980e05ca3bf7ad3d9b3d0
MD5 388d51df4e89e22b7486d2bdeb962f4a
SHA1 a9ea0a2de813a1ad2f706773b076cfe568ca6fd2
SHA512 a4065a40036eed60b6c0877b1ccf2d69fb2c3c7e8768bc3f428c62231f9b683179e612fc7f0bba48ee7a599faabaa135831406508fcadf8850cd490bfe54df78
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/I8:90oSiZd
MD5 SHA1 SHA512 SSDEEP

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Task.bat

Path C:\Users\Admin\AppData\Roaming\Temp\Task.bat
Size 128B
SHA256 6be22058abfb22b40a42fb003f86b89e204a83024c03eb82cd53e2a0a047c331
MD5 11bb3db51f701d4e42d3287f71a6a43e
SHA1 63a4ee82223be6a62d04bdfe40ef8ba91ae49a86
SHA512 907ad2c070cc1db89f43459a94d7f48985d939d749c9648b78572a266f0d3fde47813a129e9151dbf4a7d96d36f588172f57c88b8b947b56ed818d7d068abab2
MD5 SHA1 SHA512

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mozglue.dll

Path \ProgramData\mozglue.dll
Size 593KB
SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
MD5 c8fd9be83bc728cc04beffafc2907fe9
SHA1 95ab9f701e0024cedfbd312bcfe4e726744c4f2e
SHA512 fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040
SSDEEP 12288:BlSyAom/gcRKMdRm4wFkRHuyG4RRGJVDjMk/x21R8gY/r:BKgcRKMdRm4wFkVVDGJVv//x21R8br
MD5 SHA1 SHA512 SSDEEP

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nss3.dll

Path \ProgramData\nss3.dll
Size 2.0MB
SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
MD5 1cc453cdf74f31e4d913ff9c10acdde2
SHA1 6e85eae544d6e965f15fa5c39700fa7202f3aafe
SHA512 dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571
SSDEEP 49152:fECf12gikHlnKGxJRIB+y5nvxnaOSJ3HFNWYrVvE4CQsgzMmQfTU1NrWmy4KoAzh:J7Tf8J1Q+SS5/nr
MD5 SHA1 SHA512 SSDEEP

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unk.0.exe

Path \Users\Admin\AppData\Local\Temp\unk.0.exe
Size 182KB
SHA256 0993d4c07d308fe8dffae59c2bcea46471d87eb128e0212a295941bd7703733e
MD5 5239ca020f7751e9d634bd89366d2ed3
SHA1 d2d782542151f94574e91d0967f9ec5edfe3ed7d
SHA512 819bf6cfcda3e490cd59d77bed2db82017b113dfa24dd69d45cab6801f7aba0ce2e51a341c4990648b23a4bbc571ad8dfd27f347dc899967ba8e3360c9745724
SSDEEP 3072:VH+kVcxpOIWfCQgwLpOx9uF79AklwKx4PlIGi:gf7OIaCodOWhhx4u
MD5 SHA1 SHA512 SSDEEP

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unk.1.exe

Path \Users\Admin\AppData\Local\Temp\unk.1.exe
Size 1.8MB
SHA256 6b508cfb3a4a1b109935975ae79fa56f57f660efa86b0e0718015fcd0a97c9dc
MD5 5baeb08d6ff9a2412fa58250d50529a2
SHA1 58ae243f780bc2916a3ddbfa1534250fa817047b
SHA512 46466804725fd0f181869b8b041123c66aaab5266e3887c462c46e324779e4d201732fbab057ea655cd8ab15081a4552ec54c1bcf2f80be4a80a50bc8b76c95f
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/IBhAbGHNhRXOqVH5aHBBoS91:90oSiZ63YBmS91
MD5 SHA1 SHA512 SSDEEP

Submit Download

unk.1.exe

Path \Users\Admin\AppData\Local\Temp\unk.1.exe
Size 2.0MB
SHA256 1f838a203defd1ade2386da21082702fe302ed97258f341e28c2e0f0b59a436d
MD5 8a3653c8ec90e8cdea0f43e4566cc8d4
SHA1 cc4ad55c21b3820b4abf7b8cbfbad9af8d47b0c9
SHA512 23a4e38b446b61d3c45c508fd81f17844fa0dfe5f852070b5e794bcdcd04009904518a79ecccbff2b884599ec40bc5ef62132d712a765c0db898d81a6eb93f39
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/IBhAbGHNhRXOqVH5aHBBoS9+DPBR:90oSiZ63YBmS9+rCA
MD5 SHA1 SHA512 SSDEEP

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unk.1.exe

Path \Users\Admin\AppData\Local\Temp\unk.1.exe
Size 1.9MB
SHA256 03dc23c2a1233f654e226d850d4209cf9d3460c666132cb5b47b9f9e7f45fe62
MD5 07dfd02b7bddc0aec75ae64e5d847f92
SHA1 bd51ef48bbd69a4e7335d1ad0d680620b38b7983
SHA512 9a9aec8b96dd1754c2b57bf751abe3dececaa95a2dec8c14feb43cf7a763ed0e5fac0ef24387fe96930e68bb568682c31e7a94b329b0a21586357b0f78f02e26
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/IBhAbGHNhRXOqVH5aHBBoS9+DPG:90oSiZ63YBmS9+rG
MD5 SHA1 SHA512 SSDEEP

Submit Download

unk.1.exe

Path \Users\Admin\AppData\Local\Temp\unk.1.exe
Size 1.8MB
SHA256 d50b7419fb0e8d56e27a8b64e8479bad4e408574637e49cb8b8c81b473586084
MD5 3c892759b24ee9ad9664b98939cd5810
SHA1 c9d42a1b9c0234b8f11655945c044fa67a4da64b
SHA512 aa4d39beacb147116ace6ee425232749aa317db02c7047d843e4d493b1ac11cbf324ded7ab0c311c5550a483d770f39f9e6ef6265ae1c12f4c120372d6bf2fb1
SSDEEP 24576:9T8Eb3E5kMG9S1UDWmAdd81rpEti0Bhboss/IBhAbGHNhRXOqVH5aHBBoS92:90oSiZ63YBmS92
MD5 SHA1 SHA512 SSDEEP

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memory/848-3-0x0000000000400000-0x0000000000840000-memory.dmp

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memory/848-2-0x00000000002F0000-0x0000000000357000-memory.dmp

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memory/848-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

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memory/848-39-0x0000000000400000-0x0000000000840000-memory.dmp

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memory/1480-113-0x0000000000400000-0x00000000008E2000-memory.dmp

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memory/1480-40-0x0000000000250000-0x0000000000251000-memory.dmp

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memory/1480-122-0x0000000000250000-0x0000000000251000-memory.dmp

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memory/2728-41-0x0000000061E00000-0x0000000061EF3000-memory.dmp

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memory/2728-22-0x0000000000900000-0x0000000000A00000-memory.dmp

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memory/2728-23-0x0000000000220000-0x0000000000254000-memory.dmp

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memory/2728-105-0x0000000000400000-0x0000000000822000-memory.dmp

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memory/2728-24-0x0000000000400000-0x0000000000822000-memory.dmp

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memory/2728-119-0x0000000000400000-0x0000000000822000-memory.dmp

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memory/2728-120-0x0000000000900000-0x0000000000A00000-memory.dmp

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