guloader | 96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
10/10/2023, 13:37

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General

Target

96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe
Size

278KB
MD5

9650a17b7905c9d28d26100a441923dc
SHA1

38e5cc535e501ea0d9b2055cf4c187b7bf3cb638
SHA256

96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24
SHA512

a33415d3ceda67fc1f37833a538685ff65ace9b028d65ec179dea7c42db8a4c1f8452504d046e03ee33cc979f1f9b59de4ba66db3dfdb25eb8bd5a46df920a89
SSDEEP

6144:OVGdx6x1a958+nU0XIdisqRwcyuWGhXPg79NWi:aW58d0XIdRByXP4Nx

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	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe

Loads dropped DLL 1 IoCs

pid	Process
3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe
2896	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3812 set thread context of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95

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

System Information Discovery
T1082

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3812 wrote to memory of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95
PID 3812 wrote to memory of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95
PID 3812 wrote to memory of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95
PID 3812 wrote to memory of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95
PID 3812 wrote to memory of 2896	3812	96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe	95

C:\Users\Admin\AppData\Local\Temp\96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe
"C:\Users\Admin\AppData\Local\Temp\96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.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:3812
- C:\Users\Admin\AppData\Local\Temp\96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe
  "C:\Users\Admin\AppData\Local\Temp\96f535bf773ab819477c9710678e9cafd30ede7178fd54dc6d6e165b3d75ab24.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:2896

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsl7B3C.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2896-15-0x0000000000470000-0x0000000001B65000-memory.dmp

Filesize
23.0MB

Download
memory/2896-16-0x0000000077918000-0x0000000077919000-memory.dmp

Filesize
4KB

Download
memory/2896-17-0x0000000000470000-0x0000000001B65000-memory.dmp

Filesize
23.0MB

Download
memory/2896-18-0x0000000077935000-0x0000000077936000-memory.dmp

Filesize
4KB

Download
memory/2896-19-0x0000000073070000-0x00000000742C4000-memory.dmp

Filesize
18.3MB

Download
memory/2896-21-0x0000000077891000-0x00000000779B1000-memory.dmp

Filesize
1.1MB

Download
memory/3812-11-0x0000000004830000-0x0000000005F25000-memory.dmp

Filesize
23.0MB

Download
memory/3812-12-0x0000000004830000-0x0000000005F25000-memory.dmp

Filesize
23.0MB

Download
memory/3812-13-0x0000000077891000-0x00000000779B1000-memory.dmp

Filesize
1.1MB

Download
memory/3812-14-0x0000000074570000-0x0000000074576000-memory.dmp

Filesize
24KB

Download