guloader | a9e35d0d4551fb6468508911eda4c6c98f92d92dec71c0850cd59d30f23f70c8

Analysis

max time kernel
148s
max time network
152s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
24/10/2023, 10:38

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General

Target

PSID CA 0338-2023-24.exe
Size

1.0MB
MD5

002b5b4dc69a87e58c8cfd17c3e8a942
SHA1

d2e27a221356918b75569cd9e36184f7d8880604
SHA256

5caabf39bc8f07554b249ff09f23b3551644485172384cd1215cfe967582d9ab
SHA512

84c9c1396b2ff403a4aacd8cfa18d13e4fde9ddafaa08bbf463fc01a47e0c73447a27353a62f243e335cf01a3cf5860804b28b86ea6b985d68e1da105ff08161
SSDEEP

24576:w2mvDENPmTMDi/eUPdToG/xpzWEGgsjzAaAbWuUV04e:+vDEpAveUZTzhG3sa+3UO4e

Score

10^/10

guloader downloader persistence

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
2588	PSID CA 0338-2023-24.exe
2588	PSID CA 0338-2023-24.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-1-5-21-3425689832-2386927309-2650718742-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\Fagsalenes = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Sugefddernes\\transformerne.exe"	wab.exe

Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs

pid	Process
2764	wab.exe
2764	wab.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2588	PSID CA 0338-2023-24.exe
2764	wab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2588 set thread context of 2764	2588	PSID CA 0338-2023-24.exe	28

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\Kikkertsigtet243\scorer.acr	PSID CA 0338-2023-24.exe

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
2588	PSID CA 0338-2023-24.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2764	wab.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28
PID 2588 wrote to memory of 2764	2588	PSID CA 0338-2023-24.exe	28

C:\Users\Admin\AppData\Local\Temp\PSID CA 0338-2023-24.exe
"C:\Users\Admin\AppData\Local\Temp\PSID CA 0338-2023-24.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Program Files (x86)\windows mail\wab.exe
  "C:\Users\Admin\AppData\Local\Temp\PSID CA 0338-2023-24.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetWindowsHookEx
  PID:2764

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

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\nso3890.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
\Users\Admin\AppData\Local\Temp\nso3890.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
\Users\Admin\AppData\Local\Temp\nso3890.tmp\System.dll

Filesize
11KB

MD5
ee260c45e97b62a5e42f17460d406068

SHA1
df35f6300a03c4d3d3bd69752574426296b78695

SHA256
e94a1f7bcd7e0d532b660d0af468eb3321536c3efdca265e61f9ec174b1aef27

SHA512
a98f350d17c9057f33e5847462a87d59cbf2aaeda7f6299b0d49bb455e484ce4660c12d2eb8c4a0d21df523e729222bbd6c820bf25b081bc7478152515b414b3

Download Submit
memory/2588-27-0x0000000077C00000-0x0000000077DA9000-memory.dmp

Filesize
1.7MB

Download
memory/2588-28-0x0000000077DF0000-0x0000000077EC6000-memory.dmp

Filesize
856KB

Download
memory/2588-29-0x0000000010000000-0x0000000010006000-memory.dmp

Filesize
24KB

Download
memory/2764-30-0x0000000077C00000-0x0000000077DA9000-memory.dmp

Filesize
1.7MB

Download
memory/2764-31-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-33-0x0000000000D50000-0x0000000004801000-memory.dmp

Filesize
58.7MB

Download
memory/2764-35-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-36-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-34-0x0000000000D50000-0x0000000004801000-memory.dmp

Filesize
58.7MB

Download
memory/2764-37-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-38-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-39-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-40-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-41-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-42-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-43-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-44-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-45-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-46-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-47-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-48-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-49-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-50-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-51-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-52-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-53-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-54-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-55-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-57-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-58-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-59-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-62-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-63-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-64-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-65-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-66-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-67-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-68-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-69-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-70-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-71-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-72-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-73-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-74-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-75-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-76-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-77-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-78-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-79-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-80-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-81-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-82-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-83-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-84-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-85-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-87-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-88-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-89-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-90-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-91-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-92-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-93-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-94-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-95-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-96-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-97-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download
memory/2764-98-0x0000000073180000-0x00000000741E2000-memory.dmp

Filesize
16.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads