guloader | 62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a

Resubmissions

10/07/2024, 12:56

240710-p6khfs1eng10

10/07/2024, 12:56

240710-p6ft9s1end10

10/07/2024, 12:55

240710-p57llaygpj10

Analysis

max time kernel
297s
max time network
297s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
10/07/2024, 12:56

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
Size 438KB
Sample240710-p6khfs1eng
SHA256 62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a
MD5 9afb4103021c5ec8b2dea2772f39178e
SHA1 bc773e17fc6e7080b4243a9b72ac75292d17bc90
SHA512 82c5fd97d80bd79c0377b1c8ea3a6e2f00f10b7ae14febc0ba9c8e5bd1405c05f62f2c66db1571b0596bd0a459e32dd58c8e9bf894068418d5b40b54b488ef33
SSDEEP 12288:LW7Ck8jvhUX7Arm+PJnGdijUR9MEuqbZv:LWeLaQnhGEYjfhbZv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader persistence

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	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	caspol.exe

Loads dropped DLL 2 IoCs

pid	Process
2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Erhvervsorganisationer = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Jaggies\\Aserne.exe"	caspol.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
3632	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2412 set thread context of 3632	2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	72

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
2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 3632	2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	72
PID 2412 wrote to memory of 3632	2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	72
PID 2412 wrote to memory of 3632	2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	72
PID 2412 wrote to memory of 3632	2412	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	72

C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
"C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.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:2412
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\caspol.exe
  "C:\Users\Admin\AppData\Local\Temp\62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe"
  2⤵
  - Checks QEMU agent file
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  PID:3632

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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 \Users\Admin\AppData\Local\Temp\nse5D73.tmp\System.dll
Size 11KB
SHA256 681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59
MD5 2ae993a2ffec0c137eb51c8832691bcb
SHA1 98e0b37b7c14890f8a599f35678af5e9435906e1
SHA512 2501371eb09c01746119305ba080f3b8c41e64535ff09cee4f51322530366d0bd5322ea5290a466356598027e6cda8ab360caef62dcaf560d630742e2dd9bcd9
SSDEEP 192:vPtkumJX7zB22kGwfy0mtVgkCPOsE1un:k702k5qpdsEQn
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2412-14-0x0000000003FF0000-0x0000000004E98000-memory.dmp

Download

memory/2412-15-0x00007FF91A791000-0x00007FF91A89F000-memory.dmp

Download

memory/2412-16-0x00007FF91A790000-0x00007FF91A96B000-memory.dmp

Download

memory/2412-19-0x0000000003FF0000-0x0000000004E98000-memory.dmp

Download

memory/2412-26-0x0000000003FF0000-0x0000000004E98000-memory.dmp

Download

memory/3632-17-0x00007FF91A790000-0x00007FF91A96B000-memory.dmp

Download

memory/3632-20-0x0000000000400000-0x0000000000611000-memory.dmp

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads