redline | 0ac33d8c3cbc892f96da5a1fcbd912f21aa77c464fea12d57651494404831225

General

Target

FoxMod.exe
Size

167KB
MD5

bd1acb871aedede6c07f0e21f149851a
SHA1

37ab454591228a86261ebf617dc760f124d8581d
SHA256

0ac33d8c3cbc892f96da5a1fcbd912f21aa77c464fea12d57651494404831225
SHA512

07890b9eb3ef6b89c306348607aab9f78ae529a0581cb737324f4daaee22cfa58146385414679f9c977ef19ca75e35138ef7a733861a586049ac40090d9b4be6

Score

10^/10

redline discovery infostealer spyware stealer

Malware Config

Signatures

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

RedLine Payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/576-60-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/576-61-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/576-62-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/576-63-0x000000000041A19E-mapping.dmp	family_redline
behavioral1/memory/576-65-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline

Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

fl.exe

pid process

1344 fl.exe
Loads dropped DLL 2 IoCs

Processes:

RegAsm.exe

pid process

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

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
Suspicious use of SetThreadContext 1 IoCs

Processes:

FoxMod.exe

description pid process target process

PID 1140 set thread context of 576 1140 FoxMod.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

RegAsm.exe

pid process

576 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegAsm.exefl.exe

description pid process

Token: SeDebugPrivilege 576 RegAsm.exe
Token: SeDebugPrivilege 1344 fl.exe

pid	process
1344	fl.exe

pid	process
576	RegAsm.exe
576	RegAsm.exe

description	pid	process	target process
PID 1140 set thread context of 576	1140	FoxMod.exe	RegAsm.exe

pid	process
576	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	576	RegAsm.exe
Token: SeDebugPrivilege	1344	fl.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

FoxMod.exeRegAsm.exe

description	pid	process	target process
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 1140 wrote to memory of 576	1140	FoxMod.exe	RegAsm.exe
PID 576 wrote to memory of 1344	576	RegAsm.exe	fl.exe
PID 576 wrote to memory of 1344	576	RegAsm.exe	fl.exe
PID 576 wrote to memory of 1344	576	RegAsm.exe	fl.exe
PID 576 wrote to memory of 1344	576	RegAsm.exe	fl.exe

C:\Users\Admin\AppData\Local\Temp\FoxMod.exe
"C:\Users\Admin\AppData\Local\Temp\FoxMod.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1140

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
2⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:576

C:\Users\Admin\AppData\Local\Temp\fl.exe
"C:\Users\Admin\AppData\Local\Temp\fl.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1344

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\fl.exe
MD5
bfeeb414fba5fb951e96f0e6c24785f0

SHA1
f1518514fb4398cc988f90b0239404653aa989ac

SHA256
5b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8

SHA512
79f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e

Download Submit
C:\Users\Admin\AppData\Local\Temp\fl.exe
MD5
bfeeb414fba5fb951e96f0e6c24785f0

SHA1
f1518514fb4398cc988f90b0239404653aa989ac

SHA256
5b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8

SHA512
79f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e

Download Submit
\Users\Admin\AppData\Local\Temp\fl.exe
MD5
bfeeb414fba5fb951e96f0e6c24785f0

SHA1
f1518514fb4398cc988f90b0239404653aa989ac

SHA256
5b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8

SHA512
79f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e

Download Submit
\Users\Admin\AppData\Local\Temp\fl.exe
MD5
bfeeb414fba5fb951e96f0e6c24785f0

SHA1
f1518514fb4398cc988f90b0239404653aa989ac

SHA256
5b25bef8ec25b09372ecd8a441cbdaf2100019e526a3ac64c6f9dd5c99b6eed8

SHA512
79f4e764e8b36c8b6fb9a859819ca2f12e8e81f2f08a9c63404e95a32c939273160bc7214d27c52a7107fad2890934bee74e94c8dde7ec0031b152b3b7a36c8e

Download Submit
memory/576-61-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/576-62-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/576-63-0x000000000041A19E-mapping.dmp

Download
memory/576-64-0x0000000075191000-0x0000000075193000-memory.dmp

Filesize
8KB

Download
memory/576-65-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/576-67-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/576-60-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/576-59-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/576-58-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1140-57-0x000000001B3E0000-0x000000001B3E2000-memory.dmp

Filesize
8KB

Download
memory/1140-55-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download
memory/1344-70-0x0000000000000000-mapping.dmp

Download
memory/1344-73-0x00000000008C0000-0x00000000008C1000-memory.dmp

Filesize
4KB

Download
memory/1344-75-0x000000001C5B0000-0x000000001C8F4000-memory.dmp

Filesize
3.3MB

Download
memory/1344-76-0x000000001BF60000-0x000000001BF62000-memory.dmp

Filesize
8KB

Download
memory/1344-77-0x000000001BF66000-0x000000001BF85000-memory.dmp

Filesize
124KB

Download
memory/1344-78-0x000000001C1B0000-0x000000001C4E7000-memory.dmp

Filesize
3.2MB

Download
memory/1344-79-0x000000001F5F0000-0x000000001F859000-memory.dmp

Filesize
2.4MB

Download
memory/1344-80-0x000000001BF85000-0x000000001BF86000-memory.dmp

Filesize
4KB

Download

Analysis

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