guloader | 1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184

Analysis

max time kernel
67s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
08-02-2023 02:25

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General

Target

1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe
Size

194KB
MD5

41fed48d58a6e38da740c8698e90287a
SHA1

07fda5e846608bcda49a82c608cb57a705d8f123
SHA256

1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184
SHA512

89614d08eb182920497822c6888bde0e443941c674e6d2e9ecf62708a3d6fc4502d64714351c641e2dd43793641f3a4b26f3a663d51ed63db0473421a7c31c9b
SSDEEP

6144:Z92uhNYpy9clxU/iVvihKE8ffU7KINkl:zhC8EaiVvihYeKz

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

Processes:

1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe

pid process

1144 1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe

pid	process
1144	1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe

Drops file in System32 directory 2 IoCs

Processes:

1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Cypriote\Valgceremoniernes\Nondense.ini	1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe
File opened for modification	C:\Windows\SysWOW64\resurrections\Fermenteres\Gartnerboligers175\Officialty.Dry	1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe

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

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe
"C:\Users\Admin\AppData\Local\Temp\1c559f7ac1b631739a10e90da2bcbe6fc838b907725afb7623fc1ed72139a184.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
PID:1144

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsd3BA.tmp\System.dll
Filesize
11KB

MD5
b8992e497d57001ddf100f9c397fcef5

SHA1
e26ddf101a2ec5027975d2909306457c6f61cfbd

SHA256
98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b

SHA512
8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c

Download Submit
memory/1144-54-0x0000000076041000-0x0000000076043000-memory.dmp

Filesize
8KB

Download
memory/1144-56-0x0000000003E10000-0x0000000003F11000-memory.dmp

Filesize
1.0MB

Download
memory/1144-57-0x0000000003E10000-0x0000000003F11000-memory.dmp

Filesize
1.0MB

Download