guloader | 7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362

Analysis

max time kernel
147s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
05/08/2023, 13:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
Size 512KB
Sample230805-qtcgracg84
SHA256 7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362
MD5 42836e7a6c9e56debb04aa192c9dd3f0
SHA1 f28722c60a354a79fd6fad6932ff28d1034eaba5
SHA512 01b4a6f7fd965a10628be28f038152dad9de86d7f01bbfb025b238ec5cf941a1b59dc8e727a506f5e94af95b67957d84d494c9cb5e4e69b25160be8a249fce25
SSDEEP 12288:p7LABZYQkao8Rqc5pbIvFPWOLogchFk/cmW1bGfKKxvEFlI:xN8cc5pbGlo6W1bG7dUI
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
3848	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2220 set thread context of 3848	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	92

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1568	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	90
PID 2220 wrote to memory of 1568	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	90
PID 2220 wrote to memory of 1568	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	90
PID 2220 wrote to memory of 332	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	91
PID 2220 wrote to memory of 332	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	91
PID 2220 wrote to memory of 332	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	91
PID 2220 wrote to memory of 3848	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	92
PID 2220 wrote to memory of 3848	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	92
PID 2220 wrote to memory of 3848	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	92
PID 2220 wrote to memory of 3848	2220	7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe	92

C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
  2⤵
  PID:1568
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
  2⤵
  PID:332
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\7247a3f88c9926488072d10907f19c9ed6b73f2ad2e218c89749d53957ba0362exe_JC.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:3848

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsuAB83.tmp\System.dll
Size 11KB
SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 fe582246792774c2c9dd15639ffa0aca90d6fd0b
SHA512 0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6
SSDEEP 192:OPtkumJX7zB22kGwfy0mtVgkCPOsX1un:/702k5qpdsXQn
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2220-140-0x0000000004A30000-0x0000000006034000-memory.dmp

Download

memory/2220-141-0x0000000004A30000-0x0000000006034000-memory.dmp

Download

memory/2220-142-0x0000000077581000-0x00000000776A1000-memory.dmp

Download

memory/2220-143-0x0000000077581000-0x00000000776A1000-memory.dmp

Download

memory/2220-144-0x0000000010000000-0x0000000010006000-memory.dmp

Download

memory/3848-145-0x0000000000B70000-0x0000000002174000-memory.dmp

Download

memory/3848-146-0x0000000000B70000-0x0000000002174000-memory.dmp

Download

memory/3848-147-0x0000000077608000-0x0000000077609000-memory.dmp

Download

memory/3848-148-0x0000000077581000-0x00000000776A1000-memory.dmp

Download

memory/3848-149-0x0000000000400000-0x000000000062B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads