redline | 23c3cd01144f12485c52e063c82ce5b7e04380c4eef5dc068c98b89b113fa25e

General

Target
FreeBitco-Extension.exe
Size 868KB
Sample201014-3f5cvq76re
SHA256 23c3cd01144f12485c52e063c82ce5b7e04380c4eef5dc068c98b89b113fa25e
MD5 c2e81b36df30915eee3db055df77b2d7
SHA1 c2a946b9f08b3fa29a6bdf608f8469bbe523a8c8
SHA512 ad621470167ea994c7493e63ce17138a0951416422cfa0c5a94918d2964d4ab67e16c35489a2371b52cfddc8daa42f48eb2dc6595f5ed97cf0cf62cf6b892d56
MD5 SHA1 SHA512

Score

10^/10

redline discovery infostealer spyware

Malware Config

Signatures

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

RedLine Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1984-5-0x0000000000400000-0x0000000000428000-memory.dmp	family_redline
behavioral1/memory/1984-6-0x00000000004235AE-mapping.dmp	family_redline
behavioral1/memory/1984-7-0x0000000000400000-0x0000000000428000-memory.dmp	family_redline
behavioral1/memory/1984-8-0x0000000000400000-0x0000000000428000-memory.dmp	family_redline

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Looks up external IP address via web service 1 IoCs

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

flow	ioc
8	checkip.amazonaws.com

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1460 set thread context of 1984	1460	FreeBitco-Extension.exe	28

Kills process with taskkill 1 IoCs

evasion

pid	Process
560	taskkill.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1984	FreeBitco-Extension.exe
1984	FreeBitco-Extension.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1460	FreeBitco-Extension.exe
Token: SeDebugPrivilege	1984	FreeBitco-Extension.exe
Token: SeDebugPrivilege	560	taskkill.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1460 wrote to memory of 1984	1460	FreeBitco-Extension.exe	28
PID 1984 wrote to memory of 524	1984	FreeBitco-Extension.exe	30
PID 1984 wrote to memory of 524	1984	FreeBitco-Extension.exe	30
PID 1984 wrote to memory of 524	1984	FreeBitco-Extension.exe	30
PID 1984 wrote to memory of 524	1984	FreeBitco-Extension.exe	30
PID 524 wrote to memory of 560	524	cmd.exe	32
PID 524 wrote to memory of 560	524	cmd.exe	32
PID 524 wrote to memory of 560	524	cmd.exe	32
PID 524 wrote to memory of 560	524	cmd.exe	32
PID 524 wrote to memory of 1376	524	cmd.exe	33
PID 524 wrote to memory of 1376	524	cmd.exe	33
PID 524 wrote to memory of 1376	524	cmd.exe	33
PID 524 wrote to memory of 1376	524	cmd.exe	33

C:\Users\Admin\AppData\Local\Temp\FreeBitco-Extension.exe
"C:\Users\Admin\AppData\Local\Temp\FreeBitco-Extension.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\FreeBitco-Extension.exe
  "C:\Users\Admin\AppData\Local\Temp\FreeBitco-Extension.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\cmd.exe
    "cmd.exe" /C taskkill /F /PID 1984 && choice /C Y /N /D Y /T 3 & Del "C:\Users\Admin\AppData\Local\Temp\FreeBitco-Extension.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:524
  - - C:\Windows\SysWOW64\taskkill.exe
      taskkill /F /PID 1984
      4⤵
      Kills process with taskkill
      Suspicious use of AdjustPrivilegeToken
      PID:560
  - - C:\Windows\SysWOW64\choice.exe
      choice /C Y /N /D Y /T 3
      4⤵
      PID:1376

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1460-0-0x00000000738C0000-0x0000000073FAE000-memory.dmp

Download

memory/1460-1-0x0000000000080000-0x0000000000081000-memory.dmp

Download

memory/1460-3-0x00000000005D0000-0x00000000005F2000-memory.dmp

Download

memory/1460-4-0x0000000000460000-0x000000000046D000-memory.dmp

Download

memory/1984-5-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/1984-7-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/1984-8-0x0000000000400000-0x0000000000428000-memory.dmp

Download

memory/1984-9-0x0000000072D50000-0x000000007343E000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads