stealerium | c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa

General

Target

c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Size

1.6MB
MD5

96c62ca985ed966d7c6d274caa5bb41a
SHA1

97842b7b0d381ae027f8a92787ffff84eca2a698
SHA256

c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa
SHA512

66e086fdd0f39f0f166c3d9253805de4095e95b47eee38393a113e2279d4f90c13c8584f3827f45c85b2bca71a9119a48dca6f59d006d4015e9c2f6dafedcde5
SSDEEP

49152:LkTq24GjdGSiqkqXfd+/9AqYanieKdsG:L1EjdGSiqkqXf0FLYW

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1216977598710812722/eEJiGM8jVlIOF9WMbphPIuNdIEZhhSSu4T_LZSo0WE_S2YnMqS8z5lz1bmAKfC9V08aI

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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
14	discord.com
15	discord.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2464	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
3860	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4036	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4036	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Token: SeDebugPrivilege	3860	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4036 wrote to memory of 228	4036	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 4036 wrote to memory of 228	4036	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 4036 wrote to memory of 228	4036	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	90
PID 228 wrote to memory of 4960	228	cmd.exe	92
PID 228 wrote to memory of 4960	228	cmd.exe	92
PID 228 wrote to memory of 4960	228	cmd.exe	92
PID 228 wrote to memory of 3860	228	cmd.exe	93
PID 228 wrote to memory of 3860	228	cmd.exe	93
PID 228 wrote to memory of 3860	228	cmd.exe	93
PID 228 wrote to memory of 2464	228	cmd.exe	94
PID 228 wrote to memory of 2464	228	cmd.exe	94
PID 228 wrote to memory of 2464	228	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
"C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:228
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4960
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 4036
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3860
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD88D.tmp.bat

Filesize
57B

MD5
85b60a990d648f6e517677e29f624908

SHA1
05fbfe887d183b16f054974aa6db44d344a1f716

SHA256
1a5b6467e55167db32e1ff66c23b2e9bf698d0af616b1f25c7c6d050e581caca

SHA512
80dc577a769ea578e9a72eb193d09316a7ff445826acfc47baf34a5f487d15d1db3474a8d0ad6460074eebf33d3b4da36c0476b4cf63c29927d9240a22ae892d

Download Submit
memory/4036-0-0x0000000074A6E000-0x0000000074A6F000-memory.dmp

Filesize
4KB

Download
memory/4036-1-0x0000000000BE0000-0x0000000000D72000-memory.dmp

Filesize
1.6MB

Download
memory/4036-2-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/4036-3-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download
memory/4036-4-0x0000000005D90000-0x0000000005E22000-memory.dmp

Filesize
584KB

Download
memory/4036-5-0x0000000005E20000-0x0000000005E46000-memory.dmp

Filesize
152KB

Download
memory/4036-6-0x0000000005E50000-0x0000000005E58000-memory.dmp

Filesize
32KB

Download
memory/4036-9-0x0000000074A60000-0x0000000075210000-memory.dmp

Filesize
7.7MB

Download

Analysis

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