stealerium | a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302

General

Target

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe
Size

2.4MB
MD5

928ecc7808c79c7a4ca63a1730cee20a
SHA1

fb9bedbcb0758af5ec77b248915aba7ab2e3e504
SHA256

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302
SHA512

ba6656a5c29873d94c25209558a81a33ce7de897cddd35d2a523e61e03845ff4e7bf77b78ae873ad3a393e2216d37dcc6d0a62a6dc260b663cb5b3af2c143ee7
SSDEEP

49152:Ph+ZkldoPK8YaQtEZgJcZRmAqbsnqS02N/DZ2dVfYSBR:Y2cPK8c1xAqS9DUvY+

Score

10^/10

stealerium stealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1257742466048720936/KzD1DlNrf4X-n_3qBCdOf_3XBXbWtKPWsEcuu8mm7843WeDUMw3CKaQQD6estFCo5S2g

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

Processes:

flow ioc

5 discord.com
4 discord.com

flow	ioc
5	discord.com
4	discord.com

Suspicious use of SetThreadContext 1 IoCs

Processes:

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

description	pid	process	target process
PID 2120 set thread context of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe

Drops file in Windows directory 1 IoCs

Processes:

RegSvcs.exe

description ioc process

File opened for modification C:\Windows\Microsoft.NET\Framework\v4.0.30319\ RegSvcs.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1120 timeout.exe
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1816 taskkill.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegSvcs.exe

pid process

1824 RegSvcs.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

pid process

2120 a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exetaskkill.exe

description pid process

Token: SeDebugPrivilege 1824 RegSvcs.exe
Token: SeDebugPrivilege 1816 taskkill.exe

description	ioc	process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v4.0.30319\	RegSvcs.exe

pid	process
1120	timeout.exe

pid	process
1816	taskkill.exe

pid	process
1824	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1824	RegSvcs.exe
Token: SeDebugPrivilege	1816	taskkill.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

pid	process
2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe
2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

pid	process
2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe
2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exeRegSvcs.execmd.exe

description	pid	process	target process
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 2120 wrote to memory of 1824	2120	a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe	RegSvcs.exe
PID 1824 wrote to memory of 2260	1824	RegSvcs.exe	cmd.exe
PID 1824 wrote to memory of 2260	1824	RegSvcs.exe	cmd.exe
PID 1824 wrote to memory of 2260	1824	RegSvcs.exe	cmd.exe
PID 1824 wrote to memory of 2260	1824	RegSvcs.exe	cmd.exe
PID 2260 wrote to memory of 1808	2260	cmd.exe	chcp.com
PID 2260 wrote to memory of 1808	2260	cmd.exe	chcp.com
PID 2260 wrote to memory of 1808	2260	cmd.exe	chcp.com
PID 2260 wrote to memory of 1808	2260	cmd.exe	chcp.com
PID 2260 wrote to memory of 1816	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 1816	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 1816	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 1816	2260	cmd.exe	taskkill.exe
PID 2260 wrote to memory of 1120	2260	cmd.exe	timeout.exe
PID 2260 wrote to memory of 1120	2260	cmd.exe	timeout.exe
PID 2260 wrote to memory of 1120	2260	cmd.exe	timeout.exe
PID 2260 wrote to memory of 1120	2260	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe
"C:\Users\Admin\AppData\Local\Temp\a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2120

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Users\Admin\AppData\Local\Temp\a4fc6ef06617c607c0b4d532e7df102e1dbe7416b28402e214672cbae1188302.exe"
2⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpBCA3.tmp.bat
3⤵
- Suspicious use of WriteProcessMemory
PID:2260

C:\Windows\SysWOW64\chcp.com
chcp 65001
4⤵
PID:1808

C:\Windows\SysWOW64\taskkill.exe
TaskKill /F /IM 1824
4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1816

C:\Windows\SysWOW64\timeout.exe
Timeout /T 2 /Nobreak
4⤵
- Delays execution with timeout.exe
PID:1120

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabBB27.tmp
Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarBB39.tmp
Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\cerecloths
Filesize
1.6MB

MD5
3903ada0ac31eadcf07abac457f50210

SHA1
be0a97cc0d5d7fbe85dca85afe57104a6723ea65

SHA256
7c98ea94b70e5c7dbc5018d4a88e6a66ac88bb9fd97a8c0afb2c40af5cf4975b

SHA512
5fc9fd928471de601f0c7e60b83306deaffe39727cd830db6ddf688e6ec27632c9fd1eeb411568c6fd39dac19efd92c065706d1265f0ce2cc78f31394f97a774

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBCA3.tmp.bat
Filesize
57B

MD5
50020e4a79b189d13818b80d87b0b1b5

SHA1
3d0fa930f254a576fd1df865f8da61c131450848

SHA256
d7ca7e17043dbd4821e97437b3e9254b6d60ad03d395e348ae1097646fbd0a57

SHA512
eabbe7229b7e414674d64e9f511292170048a4ea87d74f33890e8cdfc62cac62c35f15496491d9ced28a0c5c4bcbcbf66fca60dde51bfbce482f0a9c35667a73

Download Submit
memory/1824-18-0x0000000073D70000-0x000000007445E000-memory.dmp

Filesize
6.9MB

Download
memory/1824-17-0x0000000073D7E000-0x0000000073D7F000-memory.dmp

Filesize
4KB

Download
memory/1824-16-0x0000000000400000-0x0000000000594000-memory.dmp

Filesize
1.6MB

Download
memory/1824-21-0x0000000002110000-0x00000000021A2000-memory.dmp

Filesize
584KB

Download
memory/1824-22-0x0000000000C20000-0x0000000000C46000-memory.dmp

Filesize
152KB

Download
memory/1824-23-0x00000000005E0000-0x00000000005E8000-memory.dmp

Filesize
32KB

Download
memory/1824-15-0x0000000000400000-0x0000000000594000-memory.dmp

Filesize
1.6MB

Download
memory/1824-12-0x0000000000400000-0x0000000000594000-memory.dmp

Filesize
1.6MB

Download
memory/1824-62-0x0000000073D70000-0x000000007445E000-memory.dmp

Filesize
6.9MB

Download
memory/2120-11-0x0000000000120000-0x0000000000124000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads