guloader | 2862f154ed0e21c853a4e215cd7f5ee6d18e166ee3a742702540d5a4bb206a2f

Analysis

max time kernel
144s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
13/07/2023, 16:54

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General

Target
145.scr
Size 414KB
Sample230713-vewpashd99
SHA256 2862f154ed0e21c853a4e215cd7f5ee6d18e166ee3a742702540d5a4bb206a2f
MD5 8fa68b8662eaafcac7fcaa6ff003cf76
SHA1 a16a01e51b509957a385bae6ee5f3d0359f69cea
SHA512 8a06a8b7764c2f2df39fb682a0877a2080d38a8924633576071f16d6dfcdb013c04424c3bf15233f43cbd8e1e41e6e2914e57575e5a38896a98edb670b1c02b0
SSDEEP 6144:WPXFzAFDQk5CcQ5bRioRCk++koIh1iWb5A2jUs71e1gl6exMEmqMk35QJnkTDGt2:kzyNxDoRCvX5yWby1gceNRx6Jnk6XPS
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
4520	145.scr

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\leaderess\smmendes\Udtrkssengs.int	145.scr

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\gemytlig\clamorers\trindeler\trappean.Ste213	145.scr
File opened for modification	C:\Windows\Fonts\bremsningerne\regionalgeografiers.Ber	145.scr

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

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\145.scr
"C:\Users\Admin\AppData\Local\Temp\145.scr" /S
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
PID:4520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsr8B69.tmp\System.dll
Size 11KB
SHA256 6fcea34c8666b06368379c6c402b5321202c11b00889401c743fb96c516c679e
MD5 fccff8cb7a1067e23fd2e2b63971a8e1
SHA1 30e2a9e137c1223a78a0f7b0bf96a1c361976d91
SHA512 f4335e84e6f8d70e462a22f1c93d2998673a7616c868177cac3e8784a3be1d7d0bb96f2583fa0ed82f4f2b6b8f5d9b33521c279a42e055d80a94b4f3f1791e0c
SSDEEP 192:xPtkiQJr7V9r3HcU17S8g1w5xzWxy6j2V7i77blbTc4v:g7VpNo8gmOyRsVc4
MD5 SHA1 SHA512 SSDEEP

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uhyrernes.ini

Path C:\Users\Admin\Pictures\uhyrernes.ini
Size 32B
SHA256 332504cea7d45f5f2f2554d3842dab2d3b3eb656288352e65217ea3a99a8d45b
MD5 dd143147e10d519478db6e6956810edb
SHA1 b7ff19de5084e38102023994ce40631aabde2133
SHA512 9b1d7b9aa854f5d5a9cb903aa55a76c74c272e399f91484338e80d822dab61c7da907597d7302393646772ab36f2a9382f7c326a8f300deabb578198ec848eb9
MD5 SHA1 SHA512