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

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

Web Service

T1102

flow	ioc
4	discord.com
5	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2568	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
1108	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
Token: SeDebugPrivilege	1108	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 824 wrote to memory of 3052	824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	32
PID 824 wrote to memory of 3052	824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	32
PID 824 wrote to memory of 3052	824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	32
PID 824 wrote to memory of 3052	824	c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe	32
PID 3052 wrote to memory of 2744	3052	cmd.exe	34
PID 3052 wrote to memory of 2744	3052	cmd.exe	34
PID 3052 wrote to memory of 2744	3052	cmd.exe	34
PID 3052 wrote to memory of 2744	3052	cmd.exe	34
PID 3052 wrote to memory of 1108	3052	cmd.exe	35
PID 3052 wrote to memory of 1108	3052	cmd.exe	35
PID 3052 wrote to memory of 1108	3052	cmd.exe	35
PID 3052 wrote to memory of 1108	3052	cmd.exe	35
PID 3052 wrote to memory of 2568	3052	cmd.exe	36
PID 3052 wrote to memory of 2568	3052	cmd.exe	36
PID 3052 wrote to memory of 2568	3052	cmd.exe	36
PID 3052 wrote to memory of 2568	3052	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe
"C:\Users\Admin\AppData\Local\Temp\c1cf23cf49d7406b02b538db9d9636209c706d3f2fd9719bfda55aef5f65cbaa.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp19E.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3052
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2744
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 824
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1108
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabAE.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarF0.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp19E.tmp.bat

Filesize
56B

MD5
80e425e382758928ea12bfa52d7fc4bb

SHA1
60d9a5414743726953dd3fbef3fe9c82aa49b5c3

SHA256
bb1bbe6aa15c82bef1fb61cc0b9d65b1581b67a1630a036e633265bd55345178

SHA512
e1751eddfa61355c09d3cda746be2b88d5787d522506ad7b04d3c82b9090c3a8487e9283268d305e7c93b092de1c5ae0f99ad38ff289f272f4a2ca256c66f080

Download Submit
memory/824-0-0x000000007499E000-0x000000007499F000-memory.dmp

Filesize
4KB

Download
memory/824-1-0x0000000000ED0000-0x0000000001062000-memory.dmp

Filesize
1.6MB

Download
memory/824-2-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download
memory/824-3-0x0000000005410000-0x00000000054A2000-memory.dmp

Filesize
584KB

Download
memory/824-4-0x00000000005F0000-0x0000000000616000-memory.dmp

Filesize
152KB

Download
memory/824-5-0x0000000000510000-0x0000000000518000-memory.dmp

Filesize
32KB

Download
memory/824-42-0x0000000074990000-0x000000007507E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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