redline | 3e6ecd9dc9ec4d42be5fdca7c55931fa9f835f3f634ee9f707ed7b1a102e9f7d

General

Target

FL Studia.exe
Size

1.5MB
MD5

865634b3f6cb4d2ac3dafbbd88085511
SHA1

5f9882d70100ed1b5fd7281bc6cbb1026591f83e
SHA256

3e6ecd9dc9ec4d42be5fdca7c55931fa9f835f3f634ee9f707ed7b1a102e9f7d
SHA512

8dff199ebf486bdac97ac760bf557a84e84dff631d57f627ade2bddbe76dd145d5d4014506a5f1944ccd6ba58b309a2c24845adb49e66b7229b28a79d3da7b99

Score

10^/10

redline h evasion infostealer spyware trojan

Malware Config

Extracted

Family

redline

Botnet

H

C2

185.255.133.25:18225

Signatures

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

RedLine Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4092-120-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral2/memory/4092-125-0x0000000000418D2A-mapping.dmp	family_redline
behavioral2/memory/4092-135-0x0000000009090000-0x0000000009696000-memory.dmp	family_redline

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

Processes:

WerFault.exe

description pid process target process

PID 3952 created 992 3952 WerFault.exe FL Studia.exe
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

description	pid	process	target process
PID 3952 created 992	3952	WerFault.exe	FL Studia.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

FL Studia.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	FL Studia.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	FL Studia.exe

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

FL Studia.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA FL Studia.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

FL Studia.exe

description pid process target process

PID 992 set thread context of 4092 992 FL Studia.exe AppLaunch.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3952 992 WerFault.exe FL Studia.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	FL Studia.exe

description	pid	process	target process
PID 992 set thread context of 4092	992	FL Studia.exe	AppLaunch.exe

pid	pid_target	process	target process
3952	992	WerFault.exe	FL Studia.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

WerFault.exeAppLaunch.exe

pid	process
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
3952	WerFault.exe
4092	AppLaunch.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

WerFault.exeAppLaunch.exe

description	pid	process
Token: SeRestorePrivilege	3952	WerFault.exe
Token: SeBackupPrivilege	3952	WerFault.exe
Token: SeDebugPrivilege	3952	WerFault.exe
Token: SeDebugPrivilege	4092	AppLaunch.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

FL Studia.exe

description	pid	process	target process
PID 992 wrote to memory of 4092	992	FL Studia.exe	AppLaunch.exe
PID 992 wrote to memory of 4092	992	FL Studia.exe	AppLaunch.exe
PID 992 wrote to memory of 4092	992	FL Studia.exe	AppLaunch.exe
PID 992 wrote to memory of 4092	992	FL Studia.exe	AppLaunch.exe
PID 992 wrote to memory of 4092	992	FL Studia.exe	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\FL Studia.exe
"C:\Users\Admin\AppData\Local\Temp\FL Studia.exe"
1⤵
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:992

C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 992 -s 488
2⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3952

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

Virtualization/Sandbox Evasion

1

T1497

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/992-115-0x00000000003E0000-0x0000000000876000-memory.dmp

Filesize
4.6MB

Download
memory/992-116-0x00000000003E0000-0x0000000000876000-memory.dmp

Filesize
4.6MB

Download
memory/992-117-0x00000000003E0000-0x0000000000876000-memory.dmp

Filesize
4.6MB

Download
memory/992-118-0x00000000003E0000-0x0000000000876000-memory.dmp

Filesize
4.6MB

Download
memory/992-119-0x00000000003E0000-0x0000000000876000-memory.dmp

Filesize
4.6MB

Download
memory/4092-120-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/4092-125-0x0000000000418D2A-mapping.dmp

Download
memory/4092-126-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4092-127-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4092-128-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4092-129-0x0000000000400000-0x0000000000401000-memory.dmp

Filesize
4KB

Download
memory/4092-131-0x00000000096A0000-0x00000000096A1000-memory.dmp

Filesize
4KB

Download
memory/4092-132-0x0000000009090000-0x0000000009091000-memory.dmp

Filesize
4KB

Download
memory/4092-133-0x00000000091C0000-0x00000000091C1000-memory.dmp

Filesize
4KB

Download
memory/4092-134-0x00000000090F0000-0x00000000090F1000-memory.dmp

Filesize
4KB

Download
memory/4092-135-0x0000000009090000-0x0000000009696000-memory.dmp

Filesize
6.0MB

Download
memory/4092-136-0x0000000009130000-0x0000000009131000-memory.dmp

Filesize
4KB

Download
memory/4092-137-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/4092-141-0x000000000A1B0000-0x000000000A1B1000-memory.dmp

Filesize
4KB

Download
memory/4092-144-0x0000000009490000-0x0000000009491000-memory.dmp

Filesize
4KB

Download
memory/4092-145-0x000000000A030000-0x000000000A031000-memory.dmp

Filesize
4KB

Download
memory/4092-146-0x000000000A6B0000-0x000000000A6B1000-memory.dmp

Filesize
4KB

Download
memory/4092-147-0x000000000A870000-0x000000000A871000-memory.dmp

Filesize
4KB

Download
memory/4092-160-0x000000000AB10000-0x000000000AB11000-memory.dmp

Filesize
4KB

Download
memory/4092-161-0x000000000B210000-0x000000000B211000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads