gurcu | 645e274fec3723d065308f9b16b33392ed7f51fbd5ffc3c00806c2efafb08b65

Analysis

max time kernel
150s
max time network
151s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
22/12/2024, 14:30

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General

Target
Start.exe
Size 301KB
Sample241222-rvd8ea1per
SHA256 b371eae7b55688d307b653759c2d4ddfe3672eb7b5567bcfa9c3f75f5c6d6255
MD5 9a0e31ffbe7ecc3a2a6f968b2a8d5567
SHA1 e88e76fe96616649d2558923afe457ce3b1976ec
SHA512 db64b27997e5305473572ee8a60573032e51fbfbdc48670d9adef8ba23c81e8845d073383299c94f87a0100c74ca0e6968b9f468fc46e31e221a71ad69a32749
SSDEEP 6144:S1eFfHQTBVVzJxmKg/R3xNJyZsMoONeL1Ip4w3qm:gPBV9JxmKE7JfVONUGqm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

gurcu redline discovery infostealer stealer

Malware Config

Extracted

Family

redline

65.108.29.210:21638

Attributes

auth_value
ad39d6a8ea7823f2a92f57ebaa4c98a5

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake 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 1 IoCs

resource	yara_rule
behavioral2/memory/3100-8-0x0000000000400000-0x0000000000420000-memory.dmp	family_redline

Redline family
redline

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2404 set thread context of 3100	2404	Start.exe	77

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	Start.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Start.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	Start.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Start.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3100	Start.exe
3100	Start.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3100	Start.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77
PID 2404 wrote to memory of 3100	2404	Start.exe	77

C:\Users\Admin\AppData\Local\Temp\Start.exe
"C:\Users\Admin\AppData\Local\Temp\Start.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Users\Admin\AppData\Local\Temp\Start.exe
  "C:\Users\Admin\AppData\Local\Temp\Start.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3100

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Start.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Start.exe.log
Size 1KB
SHA256 4ee6cb3306075a294d8856310408c53a067420756b71542468295ce44a2044ca
MD5 86254e7829d7e589b36158ff7c4a81fe
SHA1 feec156a5f610ea4b7ad0cfeb102696f227d45c2
SHA512 6d66535eb82c6a29603a43ea3a4c85299c7958c3db513b4119e6a05b386f12b8f6402eee4f4a272c893e644f8eb7f0b14025ce9e99017014574245f619f14347
MD5 SHA1 SHA512

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memory/2404-0-0x00000000747BE000-0x00000000747BF000-memory.dmp

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memory/2404-1-0x0000000000010000-0x0000000000060000-memory.dmp

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memory/2404-2-0x0000000004FD0000-0x0000000005576000-memory.dmp

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memory/2404-3-0x0000000004B00000-0x0000000004B92000-memory.dmp

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memory/2404-4-0x0000000004BC0000-0x0000000004BCA000-memory.dmp

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memory/2404-5-0x00000000747B0000-0x0000000074F61000-memory.dmp

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memory/2404-6-0x0000000004EA0000-0x0000000004F16000-memory.dmp

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memory/2404-7-0x0000000004E50000-0x0000000004E6E000-memory.dmp

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memory/2404-13-0x00000000747B0000-0x0000000074F61000-memory.dmp

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memory/3100-11-0x00000000051C0000-0x0000000005226000-memory.dmp

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memory/3100-12-0x00000000747B0000-0x0000000074F61000-memory.dmp

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memory/3100-8-0x0000000000400000-0x0000000000420000-memory.dmp

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memory/3100-14-0x00000000747B0000-0x0000000074F61000-memory.dmp

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memory/3100-15-0x00000000747B0000-0x0000000074F61000-memory.dmp

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memory/3100-16-0x00000000063D0000-0x00000000069E8000-memory.dmp

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memory/3100-17-0x0000000005F20000-0x0000000005F32000-memory.dmp

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memory/3100-18-0x0000000006050000-0x000000000615A000-memory.dmp

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memory/3100-19-0x0000000005F90000-0x0000000005FCC000-memory.dmp

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memory/3100-20-0x0000000005FD0000-0x000000000601C000-memory.dmp

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