stealerium | 90b1c4c43d707e4c08131998ea4446ebfbe2332a345c6bd8a02dbf6a6d727fef

General

Target

8bb47c1c13710fa7bf7855a2334e0320N.exe
Size

1.6MB
MD5

8bb47c1c13710fa7bf7855a2334e0320
SHA1

b74c43890ba61ca9235db411589675de145ec6b3
SHA256

90b1c4c43d707e4c08131998ea4446ebfbe2332a345c6bd8a02dbf6a6d727fef
SHA512

3757c461f06565c667244761037ed6360e16df542ee1d359a0ef11a5c7b7cdf69f204994f9b51b4dd473fb2b8ba532400963f878edd27f0d129ec84b9a0a206c
SSDEEP

49152:1cfTq24GjdGSiqkqXfd+/9AqYanieKdQc:1cOEjdGSiqkqXf0FLYW

Score

10^/10

stealerium discovery stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1280954538882240714/-IAy8AvyNj5gjF0S97ZZ8O6jI_P1ift-VtFcpbDnQUeqUhVvVnGfe0pxykiP_UX3rGEq

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	8bb47c1c13710fa7bf7855a2334e0320N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1428	timeout.exe

Kills process with taskkill 1 IoCs

evasion

pid	Process
816	taskkill.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2088	8bb47c1c13710fa7bf7855a2334e0320N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	8bb47c1c13710fa7bf7855a2334e0320N.exe
Token: SeDebugPrivilege	816	taskkill.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2088 wrote to memory of 1692	2088	8bb47c1c13710fa7bf7855a2334e0320N.exe	31
PID 2088 wrote to memory of 1692	2088	8bb47c1c13710fa7bf7855a2334e0320N.exe	31
PID 2088 wrote to memory of 1692	2088	8bb47c1c13710fa7bf7855a2334e0320N.exe	31
PID 2088 wrote to memory of 1692	2088	8bb47c1c13710fa7bf7855a2334e0320N.exe	31
PID 1692 wrote to memory of 1832	1692	cmd.exe	33
PID 1692 wrote to memory of 1832	1692	cmd.exe	33
PID 1692 wrote to memory of 1832	1692	cmd.exe	33
PID 1692 wrote to memory of 1832	1692	cmd.exe	33
PID 1692 wrote to memory of 816	1692	cmd.exe	34
PID 1692 wrote to memory of 816	1692	cmd.exe	34
PID 1692 wrote to memory of 816	1692	cmd.exe	34
PID 1692 wrote to memory of 816	1692	cmd.exe	34
PID 1692 wrote to memory of 1428	1692	cmd.exe	35
PID 1692 wrote to memory of 1428	1692	cmd.exe	35
PID 1692 wrote to memory of 1428	1692	cmd.exe	35
PID 1692 wrote to memory of 1428	1692	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\8bb47c1c13710fa7bf7855a2334e0320N.exe
"C:\Users\Admin\AppData\Local\Temp\8bb47c1c13710fa7bf7855a2334e0320N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpB5C0.tmp.bat
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1692
- - C:\Windows\SysWOW64\chcp.com
    chcp 65001
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1832
- - C:\Windows\SysWOW64\taskkill.exe
    TaskKill /F /IM 2088
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:816
- - C:\Windows\SysWOW64\timeout.exe
    Timeout /T 2 /Nobreak
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1428

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\CabB3A8.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarB3F9.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB5C0.tmp.bat

Filesize
57B

MD5
64a1d8f26120443f05752ba9b5d7bb0c

SHA1
23c6cfdace390a6818eb674bcd6115c76a50647b

SHA256
05dd9f3dfdbf2edfd3869ab49cf0ca72572685206a13e99b559d7d6b6df3a0b9

SHA512
7a530acabd72bd550bb3476a4a33daf50386ec7066f7731f121765318e017e8ece8037abf61040a986f45109d4d6378b11b2697be089d0d88add90590a8872e7

Download Submit
memory/2088-0-0x0000000073D4E000-0x0000000073D4F000-memory.dmp

Filesize
4KB

Download
memory/2088-1-0x0000000000880000-0x0000000000A12000-memory.dmp

Filesize
1.6MB

Download
memory/2088-2-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download
memory/2088-3-0x0000000004D90000-0x0000000004E22000-memory.dmp

Filesize
584KB

Download
memory/2088-4-0x0000000000590000-0x00000000005B6000-memory.dmp

Filesize
152KB

Download
memory/2088-5-0x0000000000400000-0x0000000000408000-memory.dmp

Filesize
32KB

Download
memory/2088-22-0x0000000073D4E000-0x0000000073D4F000-memory.dmp

Filesize
4KB

Download
memory/2088-43-0x0000000073D40000-0x000000007442E000-memory.dmp

Filesize
6.9MB

Download

Analysis

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