stealerium | 4af93ecfd3890167857cfab893b3f07a6cb5670ed7332c11990df8afa24a4dd9

Analysis

max time kernel
140s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/03/2024, 17:50

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General

Target
build.exe
Size 1.6MB
Sample240304-we22rahg22
SHA256 4af93ecfd3890167857cfab893b3f07a6cb5670ed7332c11990df8afa24a4dd9
MD5 940f4ed3753678645763db2af52864c7
SHA1 44cf20fc887a49f7835e707e1e6ec4d2ecf456a7
SHA512 de7b060a1a96c9ed20170da88c31a3b16ba7f1264e91baea4a2411502b99c73962c951363be0e5e52729553f21fdad2bc004e0ab655fe16828824391e069f9b5
SSDEEP 49152:kkTq24GjdGSiqkqXfd+/9AqYanieKdso:k1EjdGSiqkqXf0FLYW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

stealerium collection spyware stealer

Malware Config

Extracted

Family

stealerium

https://discord.com/api/webhooks/1174063376859680789/gXusAJejFVkRV4O6XfyWkybKGNrDxGfJlfzK4FySAHljp0SJBWfGW_9O-1gCoU-SmUVH

Signatures

Stealerium
An open source info stealer written in C# first seen in May 2022.
stealer stealerium

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	build.exe

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 Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe
Key opened	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
29	discord.com
30	discord.com
47	discord.com

Looks up external IP address via web service 1 IoCs

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

flow	ioc
32	icanhazip.com

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	build.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	build.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4996	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
4288	taskkill.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe
1072	build.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1072	build.exe
Token: SeSecurityPrivilege	4284	msiexec.exe
Token: SeDebugPrivilege	4288	taskkill.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 2724	1072	build.exe	93
PID 1072 wrote to memory of 2724	1072	build.exe	93
PID 1072 wrote to memory of 2724	1072	build.exe	93
PID 2724 wrote to memory of 4236	2724	cmd.exe	95
PID 2724 wrote to memory of 4236	2724	cmd.exe	95
PID 2724 wrote to memory of 4236	2724	cmd.exe	95
PID 2724 wrote to memory of 3748	2724	cmd.exe	96
PID 2724 wrote to memory of 3748	2724	cmd.exe	96
PID 2724 wrote to memory of 3748	2724	cmd.exe	96
PID 2724 wrote to memory of 3584	2724	cmd.exe	97
PID 2724 wrote to memory of 3584	2724	cmd.exe	97
PID 2724 wrote to memory of 3584	2724	cmd.exe	97
PID 1072 wrote to memory of 4528	1072	build.exe	100
PID 1072 wrote to memory of 4528	1072	build.exe	100
PID 1072 wrote to memory of 4528	1072	build.exe	100
PID 4528 wrote to memory of 5016	4528	cmd.exe	102
PID 4528 wrote to memory of 5016	4528	cmd.exe	102
PID 4528 wrote to memory of 5016	4528	cmd.exe	102
PID 4528 wrote to memory of 544	4528	cmd.exe	103
PID 4528 wrote to memory of 544	4528	cmd.exe	103
PID 4528 wrote to memory of 544	4528	cmd.exe	103
PID 1072 wrote to memory of 1360	1072	build.exe	104
PID 1072 wrote to memory of 1360	1072	build.exe	104
PID 1072 wrote to memory of 1360	1072	build.exe	104
PID 1360 wrote to memory of 3900	1360	cmd.exe	106
PID 1360 wrote to memory of 3900	1360	cmd.exe	106
PID 1360 wrote to memory of 3900	1360	cmd.exe	106
PID 1360 wrote to memory of 4288	1360	cmd.exe	107
PID 1360 wrote to memory of 4288	1360	cmd.exe	107
PID 1360 wrote to memory of 4288	1360	cmd.exe	107
PID 1360 wrote to memory of 4996	1360	cmd.exe	108
PID 1360 wrote to memory of 4996	1360	cmd.exe	108
PID 1360 wrote to memory of 4996	1360	cmd.exe	108

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	build.exe

C:\Users\Admin\AppData\Local\Temp\build.exe
"C:\Users\Admin\AppData\Local\Temp\build.exe"
1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:1072
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2724
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:4236
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show profile
    3⤵
    PID:3748
- - C:\Windows\SysWOW64\findstr.exe
    findstr All
    3⤵
    PID:3584
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4528
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:5016
- - C:\Windows\SysWOW64\netsh.exe
    netsh wlan show networks mode=bssid
    3⤵
    PID:544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpA16D.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    PID:3900
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 1072
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4288
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:4996

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4284

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

Bookmarks.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\Browsers\Firefox\Bookmarks.txt
Size 105B
SHA256 c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142
MD5 2e9d094dda5cdc3ce6519f75943a4ff4
SHA1 5d989b4ac8b699781681fe75ed9ef98191a5096c
SHA512 d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7
MD5 SHA1 SHA512

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OneDrive.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\Directories\OneDrive.txt
Size 25B
SHA256 8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e
MD5 966247eb3ee749e21597d73c4176bd52
SHA1 1e9e63c2872cef8f015d4b888eb9f81b00a35c79
SHA512 bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa
MD5 SHA1 SHA512

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Startup.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\Directories\Startup.txt
Size 24B
SHA256 889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483
MD5 68c93da4981d591704cea7b71cebfb97
SHA1 fd0f8d97463cd33892cc828b4ad04e03fc014fa6
SHA512 63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402
MD5 SHA1 SHA512

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Videos.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\Directories\Videos.txt
Size 23B
SHA256 a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733
MD5 1fddbf1169b6c75898b86e7e24bc7c1f
SHA1 d2091060cb5191ff70eb99c0088c182e80c20f8c
SHA512 20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d
MD5 SHA1 SHA512

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Apps.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\System\Apps.txt
Size 5KB
SHA256 fe9a3ba343ccb4a039cbd33dba91c1da5843fa5531f9f2b23d9d4f7943ba7797
MD5 b63103dafb670cc08a17e6523c8955f1
SHA1 352ffc15a0f593e3368ad1b11511b381742cfaf4
SHA512 12645b6ebee15cf9cb43628757017a2928df77af5288ba4691f21ffeb27cbc032bf346752656c9af65275f8640b9839897c7633b8f14a05a2417035d7905c0ea
SSDEEP 96:OfpaX3fpaXPfpamFfomQNpJfVQWEfnpKEfnDzfotvufVbfFTSfFTaiRpqffOtrhh:wpa/pa3paioTVn2nw2nXoyV7lslkOLOM
MD5 SHA1 SHA512 SSDEEP

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Process.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\System\Process.txt
Size 4KB
SHA256 fe714eb9ad45e00d764377a344842dfadd5c772f0452a931e149ad13a723c27a
MD5 234d36f6870a0ae6826466be808c8668
SHA1 46ea20ad07e1e82a0d1ba78a65ac47dd567a8db2
SHA512 a72321c183412a2e5b4cdbdae670f6a8cb09c8bc2dc37e78d538724b156b38e425896f3e92555a14ced3a2a5bd63698680a7c8b69821aa5a8deaac1f05b33952
SSDEEP 48:zaXo3pZEF19hOiWJHGqtMbcPb1ufHWt2+GF:zaY3XEF19giSmqtMwPB+Y2
MD5 SHA1 SHA512 SSDEEP

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ProductKey.txt

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\Admin@FHOHZANM_en-US\System\ProductKey.txt
Size 29B
SHA256 f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3
MD5 71eb5479298c7afc6d126fa04d2a9bde
SHA1 a9b3d5505cf9f84bb6c2be2acece53cb40075113
SHA512 7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd
MD5 SHA1 SHA512

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msgid.dat

Path C:\Users\Admin\AppData\Local\8acc4b74cc66dfa86771b36f65f53653\msgid.dat
Size 19B
SHA256 f8fe8849588144c83ffda8aa6fd219f605071493ce5bdeede1b4c85273063749
MD5 ba0ad2a533cde8ba08b9feeba1c24478
SHA1 888a73d93b46a3670a9deacba4d8335d3ee5a3c2
SHA512 b5dea40742e929e5511d37b0825c8ecf13d8ac12dbe8434d8fb2ec8b6eabc89b5716e8a2305fda13f48546590fd52e5df8474f7b5de158dee58dd9043444e2e8
MD5 SHA1 SHA512

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tmpA16D.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA16D.tmp.bat
Size 57B
SHA256 122bc2fb2388976e4b4d178ce4159246c0ebd458911223385bf217075355918a
MD5 f2c61bb0ccc540eb8c8765e360253b87
SHA1 6d73adadd97bd5b5dc2e8c14b342654a40f7c22e
SHA512 5d0bccadf57d7214c4c5978c6f8525efdc32b184d2d26f2f572fb2a738ee2791da09db1baa8e68bf8eb9d5c388057e36acfb1f9cd1d30c9ecbf057dcb55e2685
MD5 SHA1 SHA512

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memory/1072-7-0x0000000006100000-0x000000000610A000-memory.dmp

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memory/1072-5-0x0000000005150000-0x0000000005176000-memory.dmp

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memory/1072-62-0x0000000006220000-0x00000000062B2000-memory.dmp

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memory/1072-64-0x0000000006E50000-0x00000000073F4000-memory.dmp

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memory/1072-8-0x0000000006110000-0x0000000006118000-memory.dmp

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memory/1072-0-0x0000000000010000-0x00000000001A2000-memory.dmp

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memory/1072-189-0x0000000004B70000-0x0000000004B80000-memory.dmp

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memory/1072-191-0x0000000006180000-0x00000000061FA000-memory.dmp

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memory/1072-6-0x0000000004F20000-0x0000000004F28000-memory.dmp

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memory/1072-9-0x0000000006130000-0x000000000614E000-memory.dmp

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memory/1072-4-0x00000000050C0000-0x0000000005152000-memory.dmp

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memory/1072-3-0x0000000004B70000-0x0000000004B80000-memory.dmp

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memory/1072-258-0x0000000006510000-0x00000000065C2000-memory.dmp

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memory/1072-259-0x0000000006720000-0x0000000006742000-memory.dmp

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memory/1072-260-0x00000000077C0000-0x0000000007B14000-memory.dmp

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memory/1072-262-0x0000000074EA0000-0x0000000075650000-memory.dmp

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memory/1072-263-0x0000000004B70000-0x0000000004B80000-memory.dmp

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memory/1072-2-0x0000000004B80000-0x0000000004BE6000-memory.dmp

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memory/1072-1-0x0000000074EA0000-0x0000000075650000-memory.dmp

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memory/1072-272-0x0000000074EA0000-0x0000000075650000-memory.dmp

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