guloader | 72b1c85eede5ca8c04c1d472cd2ea3a86e7442c4933105c50fb0484d1f4c5ad0

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23/05/2024, 01:38

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General

Target
Telescribe.exe
Size 1.3MB
Sample240523-b2ws2agh7z
SHA256 cd25f94f8e22e1ca4f4bb2f65a4d904aaa01b57445284b1cf5ea9572873d2b4a
MD5 ee518fda96d7cb89bad8783aeab7e6fa
SHA1 5dced89b75ece47f8e8c0b19082ed97448f83964
SHA512 b92c661cc02640f4cbc1641b78005d84d176305af07caa92cb26441b0fcb831c31c79db7b5af69d2e331bf5ea1d28f9aa790fc7127cb58fae2224b111275f13b
SSDEEP 24576:d9Q0lIVTRJLpdCW9zTIvwS60x6Hcy/U77VaaG8uosbrDqa1VHWTcSdmWDxbLn/oY:rQ0lsRdpdBTIYS6VDM77YoOrDX1l2xbv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

guloader downloader

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
400	Telescribe.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
29	drive.google.com
30	drive.google.com

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4616	Telescribe.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
400	Telescribe.exe
4616	Telescribe.exe

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 400 set thread context of 4616	400	Telescribe.exe	92
PID 4616 set thread context of 3516	4616	Telescribe.exe	56
PID 4616 set thread context of 1196	4616	Telescribe.exe	99
PID 1196 set thread context of 3516	1196	write.exe	56
PID 1196 set thread context of 4740	1196	write.exe	106

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\konvoluterer\Forsikringsinspektrer.ini	Telescribe.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\mycelian\sempitern.ini	Telescribe.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	write.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
400	Telescribe.exe
4616	Telescribe.exe
4616	Telescribe.exe
1196	write.exe
1196	write.exe
1196	write.exe
1196	write.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3516	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 400 wrote to memory of 4616	400	Telescribe.exe	92
PID 400 wrote to memory of 4616	400	Telescribe.exe	92
PID 400 wrote to memory of 4616	400	Telescribe.exe	92
PID 400 wrote to memory of 4616	400	Telescribe.exe	92
PID 400 wrote to memory of 4616	400	Telescribe.exe	92
PID 4616 wrote to memory of 1196	4616	Telescribe.exe	99
PID 4616 wrote to memory of 1196	4616	Telescribe.exe	99
PID 4616 wrote to memory of 1196	4616	Telescribe.exe	99
PID 1196 wrote to memory of 4740	1196	write.exe	106
PID 1196 wrote to memory of 4740	1196	write.exe	106

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
PID:3516
- C:\Users\Admin\AppData\Local\Temp\Telescribe.exe
  "C:\Users\Admin\AppData\Local\Temp\Telescribe.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:400
- - C:\Users\Admin\AppData\Local\Temp\Telescribe.exe
    "C:\Users\Admin\AppData\Local\Temp\Telescribe.exe"
    3⤵
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:4616
  - - C:\Windows\SysWOW64\write.exe
      "C:\Windows\SysWOW64\write.exe"
      4⤵
      Suspicious use of SetThreadContext
      Modifies Internet Explorer settings
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:1196
    - - C:\Program Files\Mozilla Firefox\Firefox.exe
        
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        5⤵
        
        PID:4740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm3F1E.tmp\System.dll
Size 11KB
SHA256 98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b
MD5 b8992e497d57001ddf100f9c397fcef5
SHA1 e26ddf101a2ec5027975d2909306457c6f61cfbd
SHA512 8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c
SSDEEP 192:PPtkumJX7zB22kGwfy0mtVgkCPOs81un:E702k5qpds8Qn
MD5 SHA1 SHA512 SSDEEP

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memory/400-37-0x0000000004B10000-0x0000000006B31000-memory.dmp

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memory/400-32-0x0000000004B10000-0x0000000006B31000-memory.dmp

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memory/400-33-0x0000000077B51000-0x0000000077C71000-memory.dmp

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memory/400-34-0x0000000010004000-0x0000000010005000-memory.dmp

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memory/400-51-0x0000000004B10000-0x0000000006B31000-memory.dmp

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memory/1196-57-0x0000000000860000-0x000000000089F000-memory.dmp

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memory/1196-60-0x0000000000860000-0x000000000089F000-memory.dmp

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memory/3516-61-0x00000000082F0000-0x000000000840D000-memory.dmp

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memory/4616-50-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4616-36-0x0000000001660000-0x0000000003681000-memory.dmp

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memory/4616-52-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4616-53-0x0000000001660000-0x0000000003681000-memory.dmp

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memory/4616-56-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4616-35-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4616-58-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4616-59-0x0000000000400000-0x0000000001654000-memory.dmp

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memory/4740-68-0x000001FD589C0000-0x000001FD58ADD000-memory.dmp

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