guloader | 2b79fc78df84d0f8d72516ef7e2c53e4d2bc0e958c8b4a19fa81b0caad5ed045

General

Target

934202E9404CCED37C9364D2A68CCE86.exe
Size

524KB
MD5

934202e9404cced37c9364d2a68cce86
SHA1

851de34550afb75219b5d26d24486ea591120d97
SHA256

2b79fc78df84d0f8d72516ef7e2c53e4d2bc0e958c8b4a19fa81b0caad5ed045
SHA512

69805f8a90dd5d62c40ee85d16fa1359173d6b0dda9c6988c98bee05d46a47c8bb9960a5c085b91517eb7586320be90321b224f479c84246b09aa3932999e0c1
SSDEEP

6144:wT4DtYNGetfCDvOiqi9U2473eY9li13JrYp9rcmHhZ45GMhfHKlfrs9EcJxFfAcA:wT3tfCDvBqB24r8Pkp5HskCgfrlIPRAN

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	934202E9404CCED37C9364D2A68CCE86.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	934202E9404CCED37C9364D2A68CCE86.exe

Loads dropped DLL 1 IoCs

pid	Process
2492	934202E9404CCED37C9364D2A68CCE86.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2476	934202E9404CCED37C9364D2A68CCE86.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2492	934202E9404CCED37C9364D2A68CCE86.exe
2476	934202E9404CCED37C9364D2A68CCE86.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2492 set thread context of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2476	934202E9404CCED37C9364D2A68CCE86.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2492	934202E9404CCED37C9364D2A68CCE86.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30
PID 2492 wrote to memory of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30
PID 2492 wrote to memory of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30
PID 2492 wrote to memory of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30
PID 2492 wrote to memory of 2476	2492	934202E9404CCED37C9364D2A68CCE86.exe	30

C:\Users\Admin\AppData\Local\Temp\934202E9404CCED37C9364D2A68CCE86.exe
"C:\Users\Admin\AppData\Local\Temp\934202E9404CCED37C9364D2A68CCE86.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:2492
- C:\Users\Admin\AppData\Local\Temp\934202E9404CCED37C9364D2A68CCE86.exe
  "C:\Users\Admin\AppData\Local\Temp\934202E9404CCED37C9364D2A68CCE86.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:2476

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

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsj7476.tmp\System.dll

Filesize
12KB

MD5
6e55a6e7c3fdbd244042eb15cb1ec739

SHA1
070ea80e2192abc42f358d47b276990b5fa285a9

SHA256
acf90ab6f4edc687e94aaf604d05e16e6cfb5e35873783b50c66f307a35c6506

SHA512
2d504b74da38edc967e3859733a2a9cacd885db82f0ca69bfb66872e882707314c54238344d45945dc98bae85772aceef71a741787922d640627d3c8ae8f1c35

Download Submit
memory/2476-94-0x0000000001470000-0x00000000021FB000-memory.dmp

Filesize
13.5MB

Download
memory/2476-69-0x0000000001470000-0x00000000021FB000-memory.dmp

Filesize
13.5MB

Download
memory/2476-98-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2476-96-0x0000000001470000-0x00000000021FB000-memory.dmp

Filesize
13.5MB

Download
memory/2476-77-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2476-68-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2476-97-0x0000000032580000-0x0000000032883000-memory.dmp

Filesize
3.0MB

Download
memory/2476-70-0x0000000077B90000-0x0000000077D39000-memory.dmp

Filesize
1.7MB

Download
memory/2476-95-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2476-89-0x0000000001470000-0x00000000021FB000-memory.dmp

Filesize
13.5MB

Download
memory/2476-93-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2492-63-0x00000000030B0000-0x0000000003E3B000-memory.dmp

Filesize
13.5MB

Download
memory/2492-67-0x00000000750B0000-0x00000000750B7000-memory.dmp

Filesize
28KB

Download
memory/2492-64-0x00000000030B0000-0x0000000003E3B000-memory.dmp

Filesize
13.5MB

Download
memory/2492-66-0x0000000077D80000-0x0000000077E56000-memory.dmp

Filesize
856KB

Download
memory/2492-65-0x0000000077B90000-0x0000000077D39000-memory.dmp

Filesize
1.7MB

Download

Analysis

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