redline | 60c645c0a668c13ad36d2d5b67777dedf992e392e652e7f0519f21d658254648

General

Target

surfex.exe
Size

310KB
MD5

1f4b0637137572a1fb34aaa033149506
SHA1

c209c9a60a752bc7980a3d9d53daf4b4b32973a9
SHA256

60c645c0a668c13ad36d2d5b67777dedf992e392e652e7f0519f21d658254648
SHA512

4fd27293437b8bf77d15d993da2b0e75c9fba93bd5f94dad439a3e2e4c16c444f6a32543271f1d2ad79c220354b23301e544765ca392fc156267a89338452e86
SSDEEP

6144:Zm1G61auNh8PDtyJvsHP+iVQmoc2RZ4cm++pBESrvD6ClOC:6GaxO5rHPkmojzAr6C8

Score

10^/10

redline tg@cvv88888 discovery infostealer

Malware Config

Extracted

Family

redline

Botnet

TG@CVV88888

C2

185.218.125.157:21441

Signatures

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

RedLine payload 5 IoCs

resource	yara_rule
behavioral1/memory/2396-5-0x0000000000400000-0x0000000000450000-memory.dmp	family_redline
behavioral1/memory/2396-13-0x0000000000400000-0x0000000000450000-memory.dmp	family_redline
behavioral1/memory/2396-11-0x0000000000400000-0x0000000000450000-memory.dmp	family_redline
behavioral1/memory/2396-9-0x0000000000400000-0x0000000000450000-memory.dmp	family_redline
behavioral1/memory/2396-6-0x0000000000400000-0x0000000000450000-memory.dmp	family_redline

Redline family
redline

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2548 set thread context of 2396	2548	surfex.exe	31

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	surfex.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\F1A578C4CB5DE79A370893983FD4DA8B67B2B064\Blob = 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	RegAsm.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\ROOT\Certificates\F1A578C4CB5DE79A370893983FD4DA8B67B2B064	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31
PID 2548 wrote to memory of 2396	2548	surfex.exe	31

C:\Users\Admin\AppData\Local\Temp\surfex.exe
"C:\Users\Admin\AppData\Local\Temp\surfex.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies system certificate store
  PID:2396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Tmp9D98.tmp

Filesize
2KB

MD5
1420d30f964eac2c85b2ccfe968eebce

SHA1
bdf9a6876578a3e38079c4f8cf5d6c79687ad750

SHA256
f3327793e3fd1f3f9a93f58d033ed89ce832443e2695beca9f2b04adba049ed9

SHA512
6fcb6ce148e1e246d6805502d4914595957061946751656567a5013d96033dd1769a22a87c45821e7542cde533450e41182cee898cd2ccf911c91bc4822371a8

Download Submit
memory/2396-5-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-13-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-11-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-9-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2396-6-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-4-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2396-3-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2548-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2548-1-0x00000000011A0000-0x00000000011F4000-memory.dmp

Filesize
336KB

Download
memory/2548-14-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing