guloader | 62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a

Resubmissions

10-07-2024 12:56

240710-p6khfs1eng 10

10-07-2024 12:56

240710-p6ft9s1end 10

10-07-2024 12:55

240710-p57llaygpj 10

Analysis

max time kernel
299s
max time network
302s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
10-07-2024 12:56

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General

Target

62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
Size

438KB
MD5

9afb4103021c5ec8b2dea2772f39178e
SHA1

bc773e17fc6e7080b4243a9b72ac75292d17bc90
SHA256

62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a
SHA512

82c5fd97d80bd79c0377b1c8ea3a6e2f00f10b7ae14febc0ba9c8e5bd1405c05f62f2c66db1571b0596bd0a459e32dd58c8e9bf894068418d5b40b54b488ef33
SSDEEP

12288:LW7Ck8jvhUX7Arm+PJnGdijUR9MEuqbZv:LWeLaQnhGEYjfhbZv

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
2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
2856	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-1-5-21-3502430532-24693940-2469786940-1000\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
2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe
2244	caspol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2856 set thread context of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30

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
2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30
PID 2856 wrote to memory of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30
PID 2856 wrote to memory of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30
PID 2856 wrote to memory of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30
PID 2856 wrote to memory of 2244	2856	62548c66d11776c84706553bdd76afd7248d2c3e69b0f47215c0dc307f0dd06a.exe	30

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:2856
- 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:2244

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

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Downloads

\Users\Admin\AppData\Local\Temp\nsy316D.tmp\System.dll

Filesize
11KB

MD5
2ae993a2ffec0c137eb51c8832691bcb

SHA1
98e0b37b7c14890f8a599f35678af5e9435906e1

SHA256
681382f3134de5c6272a49dd13651c8c201b89c247b471191496e7335702fa59

SHA512
2501371eb09c01746119305ba080f3b8c41e64535ff09cee4f51322530366d0bd5322ea5290a466356598027e6cda8ab360caef62dcaf560d630742e2dd9bcd9

Download Submit
memory/2244-19-0x00000000776B0000-0x0000000077859000-memory.dmp

Filesize
1.7MB

Download
memory/2244-30-0x0000000000400000-0x0000000000615000-memory.dmp

Filesize
2.1MB

Download
memory/2856-16-0x00000000042D0000-0x0000000005178000-memory.dmp

Filesize
14.7MB

Download
memory/2856-17-0x00000000776B1000-0x00000000777B2000-memory.dmp

Filesize
1.0MB

Download
memory/2856-18-0x00000000776B0000-0x0000000077859000-memory.dmp

Filesize
1.7MB

Download
memory/2856-31-0x00000000042D0000-0x0000000005178000-memory.dmp

Filesize
14.7MB

Download
memory/2856-37-0x00000000042D0000-0x0000000005178000-memory.dmp

Filesize
14.7MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads