remus_stealer | 37f05f0dccbbebdd3eb3ec0d832b00ca217c2caf830290eb38ea5d1f92bdf43c

General

Target
iuyuh.exe
Size 2.3MB
Sample260609-r2laascx5j
SHA256 37f05f0dccbbebdd3eb3ec0d832b00ca217c2caf830290eb38ea5d1f92bdf43c
MD5 a24f270869387cc71de249588f455466
SHA1 0bb848f0834755f0a3a2795d56c41313787193fb
SHA512 0626803a0c03b6459b82535778fa12f7bd68280a5d40cea975e8997c449b9304b42e4f387e3781498269a5e7239d75abd2bf3b220790b6394483b7957e271100
SSDEEP 24576:pd+nBR+pEPnGmYBZVgSyCq/y47Anm/jUE6S0yrsn/nBele7tKDyi0IKvKJ+a:pd+BR+aP+BMSyCf4t/jU+0ks5n8H
TLSH
T12AB53A46BCE109E9C09A633288F22596BB34BC440F3613D72FA1BB792E76BD05C76745
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery execution remus_stealer persistence spyware stealer

Malware Config

Extracted

Family

remus_stealer

C2

http://pickad.shop:8478
http://myrtler.biz:9549
http://carogra.biz:4219

Signatures

Family: Remus
Remus is a stealer written in C++.
stealer remus_stealer

Detects Remus stealer 2 IoCs

resource	yara_rule
behavioral3/memory/1704-0-0x0000000140000000-0x0000000140039000-memory.dmp	family_remus_stealer
behavioral3/memory/1704-1-0x0000000140000000-0x0000000140039000-memory.dmp	family_remus_stealer

Downloads MZ/PE file 1 IoCs

flow	pid	Process
3	1704	iuyuh.exe

Executes dropped EXE 6 IoCs

pid	Process
1032	DNaR49wq8FkgVX11gy6uJVcPk.exe
624	oobeldr.exe
4824	oobeldr.exe
4716	oobeldr.exe
2280	oobeldr.exe
2684	oobeldr.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

System Location Discovery: System Language Discovery 1 TTPs 4 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oobeldr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DNaR49wq8FkgVX11gy6uJVcPk.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
4100	schtasks.exe
2092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1704	iuyuh.exe
1704	iuyuh.exe
1704	iuyuh.exe
1704	iuyuh.exe
1704	iuyuh.exe
1704	iuyuh.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1032	1704	iuyuh.exe	85
PID 1032 wrote to memory of 4100	1032	DNaR49wq8FkgVX11gy6uJVcPk.exe	86
PID 624 wrote to memory of 2092	624	oobeldr.exe	90

C:\Users\Admin\AppData\Local\Temp\iuyuh.exe
"C:\Users\Admin\AppData\Local\Temp\iuyuh.exe"
1⤵
- Downloads MZ/PE file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\DNaR49wq8FkgVX11gy6uJVcPk.exe
  "C:\Users\Admin\AppData\Local\Temp\DNaR49wq8FkgVX11gy6uJVcPk.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Windows\SysWOW64\schtasks.exe
    /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4100

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:624
- C:\Windows\SysWOW64\schtasks.exe
  /C /create /F /sc minute /mo 1 /tn "Telemetry Logging" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2092

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
PID:4824

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
PID:4716

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
PID:2280

C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
C:\Users\Admin\AppData\Roaming\Microsoft\Protect\oobeldr.exe
1⤵
- Executes dropped EXE
PID:2684

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

3

T1552

Credentials In Files

3

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

DNaR49wq8FkgVX11gy6uJVcPk.exe

Path C:\Users\Admin\AppData\Local\Temp\DNaR49wq8FkgVX11gy6uJVcPk.exe
Size 1.9MB
SHA256 97ce35d216de5038106be935182bb4a01d2bd3de44734ffe701bdd524db688ee
MD5 891ad98de136c77ffc9ec7f8333cf68d
SHA1 4a264e1e39b6ac2279aef60f37d25cab6ce4d3ce
SHA512 ba09a72418fc2b1cab55187db5c0de415eb8b69de06c3975aa9ebaa30edc23602d0f20e92133e095cc6ab8574e07310d1b0997528a91fa82e3c1aa6f94bd2438
SSDEEP 24576:Bh1W1Vzh2z+g/LE7gIeM9qWE2GWOhKGwsffRifhhl2k2nSjqylZaBb3gqswXmhrv:Bv+75AWE9haDv6BbQqsBbz+ZW33
TLSH
T137952A41FDC744F5E4031A3259A772AB23359C090B3ADB97EB847ABDF977285092730A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1032-6-0x0000000000400000-0x0000000000406000-memory.dmp

Download

memory/1032-8-0x0000000000400000-0x0000000000406000-memory.dmp

Download

memory/1704-0-0x0000000140000000-0x0000000140039000-memory.dmp

Download

memory/1704-1-0x0000000140000000-0x0000000140039000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads