gurcu | e58cb8b55304f2876a1729392db11b4e1355e5d83053a0304c4a3a2b856c8711

General

Target

7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe
Size

525KB
MD5

72f4779d8e2878b5aefb4fca91c7c5b0
SHA1

4e0f9241f97c23826df34033cea94dec5ab88537
SHA256

7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87
SHA512

3013961da312c17879dd4da117f1724679c6cd1a3ceac03f5a73cbe950d03b68f10281011bf7a91fe6356aea9fb358289a4e533ba79306a89b6e6a3427ee6f8c
SSDEEP

12288:io5TScB4FHQ6eem6Inp5LQtCVG8jETBAa:iI41QDehIp6YgJua

Score

10^/10

gurcu redline discovery infostealer stealer

Malware Config

Extracted

Family

redline

C2

185.215.113.57:50723

Attributes

auth_value
3f48b95855158031ae9e7dafcb203009

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu is a malware stealer written in C#.
stealer gurcu
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/2660-10-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/2660-12-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/2660-8-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/2660-7-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline
behavioral1/memory/2660-14-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline

Redline family
redline

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2212 set thread context of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31

System Location Discovery: System Language Discovery 1 TTPs 1 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

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	RegAsm.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2660	RegAsm.exe
2660	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2660	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31
PID 2212 wrote to memory of 2660	2212	7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe	31

C:\Users\Admin\AppData\Local\Temp\7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe
"C:\Users\Admin\AppData\Local\Temp\7439282561b643dcb5665f12eda9805f6f240a9e8e62f9655f17c77845f79f87.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  #cmd
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

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

memory/2212-0-0x000007FEF5D53000-0x000007FEF5D54000-memory.dmp

Filesize
4KB

Download
memory/2212-1-0x00000000011F0000-0x0000000001278000-memory.dmp

Filesize
544KB

Download
memory/2212-2-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Filesize
9.9MB

Download
memory/2212-15-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Filesize
9.9MB

Download
memory/2660-10-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2660-12-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-8-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-7-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-4-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-5-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/2660-14-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing