redline | 40ba9d771237508e4f0ea5d498a14a0345d802effc02317487256a1feff1dec1

General

Target
9a1c77227b81a36e65a1f35da3545c6d.exe
Size 789KB
Sample201031-eppjetd6y2
SHA256 40ba9d771237508e4f0ea5d498a14a0345d802effc02317487256a1feff1dec1
MD5 9a1c77227b81a36e65a1f35da3545c6d
SHA1 68bf17da632377cc93defef864e7c4db2e30634b
SHA512 40753780da519ace9f9ba72a89aa0aeda85ef079c6bde9b88d9c95e5694205c17f7266db2f944398ceeeb7137eb6eb58229f435c40611eb6099a4121737608e8
MD5 SHA1 SHA512

Score

10^/10

redline infostealer

Malware Config

Signatures

RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
infostealer redline

RedLine Payload 2 IoCs

resource	yara_rule
behavioral1/memory/600-22-0x0000000000240000-0x0000000000264000-memory.dmp	family_redline
behavioral1/memory/600-23-0x0000000000280000-0x00000000002A2000-memory.dmp	family_redline

Executes dropped EXE 1 IoCs

pid	Process
2008	bestof.exe

Loads dropped DLL 1 IoCs

pid	Process
2036	9a1c77227b81a36e65a1f35da3545c6d.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
9	ip-api.com
16	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 600	2008	bestof.exe	32

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	9a1c77227b81a36e65a1f35da3545c6d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	9a1c77227b81a36e65a1f35da3545c6d.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13\Blob = 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	9a1c77227b81a36e65a1f35da3545c6d.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\DAC9024F54D8F6DF94935FB1732638CA6AD77C13	9a1c77227b81a36e65a1f35da3545c6d.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
488	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
600	AddInProcess32.exe
600	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	bestof.exe
Token: SeDebugPrivilege	600	AddInProcess32.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 2008	2036	9a1c77227b81a36e65a1f35da3545c6d.exe	30
PID 2036 wrote to memory of 2008	2036	9a1c77227b81a36e65a1f35da3545c6d.exe	30
PID 2036 wrote to memory of 2008	2036	9a1c77227b81a36e65a1f35da3545c6d.exe	30
PID 2036 wrote to memory of 2008	2036	9a1c77227b81a36e65a1f35da3545c6d.exe	30
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 2008 wrote to memory of 600	2008	bestof.exe	32
PID 600 wrote to memory of 112	600	AddInProcess32.exe	34
PID 600 wrote to memory of 112	600	AddInProcess32.exe	34
PID 600 wrote to memory of 112	600	AddInProcess32.exe	34
PID 600 wrote to memory of 112	600	AddInProcess32.exe	34
PID 112 wrote to memory of 488	112	cmd.exe	36
PID 112 wrote to memory of 488	112	cmd.exe	36
PID 112 wrote to memory of 488	112	cmd.exe	36
PID 112 wrote to memory of 488	112	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\9a1c77227b81a36e65a1f35da3545c6d.exe
"C:\Users\Admin\AppData\Local\Temp\9a1c77227b81a36e65a1f35da3545c6d.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Roaming\gfersesurity\bestof.exe
  bestof.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:600
  - - C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C ping 127.0.0.1 -n 3 > nul & del ""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:112
    - - C:\Windows\SysWOW64\PING.EXE
        
        ping 127.0.0.1 -n 3
        5⤵
        Runs ping.exe
        
        PID:488