guloader | a0bd83b306ca7068752f3d9db6d8612d7a365c1a5ab9c8d636f6028321ebcd39

General

Target

لیست اقلام اسکن‌شده شماره ۱۱۷۵۶.vbs
Size

1.3MB
MD5

f2539546e643a5d82ab2bd6b0479268e
SHA1

879469261c3799ba7b10dde416917e2f784d74f7
SHA256

a0bd83b306ca7068752f3d9db6d8612d7a365c1a5ab9c8d636f6028321ebcd39
SHA512

96f25265f072994703328526098cea8278fe87937e1552a00b1c210e716b85ef9d6489e3099d82f8a7b75173dc751ab01330ead72951b0c93deffa7bb377507d
SSDEEP

12288:HXysOJVCGdmCx8gav0Ejfdk47/SdDf5Px+T6cs7BFEYCc8Paj4sMHuMayv3ShEn/:HXysTGdNx8g76lgdDx0oBWYqaYTS+dl

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 1 IoCs

pid	Process
916	x.exe

Loads dropped DLL 2 IoCs

pid	Process
916	x.exe
4008	x.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4008	x.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
916	x.exe
4008	x.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 916 set thread context of 4008	916	x.exe	88

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\deployeret.ini	x.exe
File opened for modification	C:\Program Files (x86)\supranaturalismen\Countinghouse.ini	x.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\boltet.ini	x.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	x.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	x.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe
4008	x.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
916	x.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 916	1192	WScript.exe	82
PID 1192 wrote to memory of 916	1192	WScript.exe	82
PID 1192 wrote to memory of 916	1192	WScript.exe	82
PID 916 wrote to memory of 4008	916	x.exe	88
PID 916 wrote to memory of 4008	916	x.exe	88
PID 916 wrote to memory of 4008	916	x.exe	88
PID 916 wrote to memory of 4008	916	x.exe	88
PID 916 wrote to memory of 4008	916	x.exe	88

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\لیست اقلام اسکن‌شده شماره ۱۱۷۵۶.vbs"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\x.exe
  "C:\Users\Admin\AppData\Local\Temp\x.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:916
- - C:\Users\Admin\AppData\Local\Temp\x.exe
    "C:\Users\Admin\AppData\Local\Temp\x.exe"
    3⤵
    - Loads dropped DLL
    - Suspicious use of NtCreateThreadExHideFromDebugger
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:4008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\deployeret.ini

Filesize
42B

MD5
08b861a994371c6bc37569782db196ac

SHA1
fe09ad55fe3192a9df9a6c2f4ac5418a5f49680a

SHA256
f1b1acd0cd8cb0a26ea7d27620867245afc03db3a00448bcfc4129267501ad82

SHA512
a4edde2de2b3092cccf64e17009a1d0f89d70e0457b9a1122b93e03f415c4110f5c3ef4cb35e1f5e4722f1a980372ad293609fc28cdc19d014acbfe3b76228ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso8415.tmp\System.dll

Filesize
12KB

MD5
d968cb2b98b83c03a9f02dd9b8df97dc

SHA1
d784c9b7a92dce58a5038beb62a48ff509e166a0

SHA256
a4ec98011ef99e595912718c1a1bf1aa67bfc2192575729d42f559d01f67b95c

SHA512
2ee41dc68f329a1519a8073ece7d746c9f3bf45d8ef3b915deb376af37e26074134af5f83c8af0fe0ab227f0d1acca9f37e5ca7ae37c46c3bcc0331fe5e2b97e

Download Submit
C:\Users\Admin\AppData\Local\Temp\x.exe

Filesize
898KB

MD5
33b10af4d2a644e0b646dad220c18f57

SHA1
a6a07dcce167941677adc71037abebb8265afd87

SHA256
24a45d78ef486e056742ee6fe616ccdde6c1a7616b113d59ec61aa86abcf7bfc

SHA512
4ff75911722bc2fac00dce1ee0fea72341e704e4d5d4acc77b651384e80a76140da32b5c97f5e3a9e7167e8eff2c2426516bdde17b6fcc3ed5b42334c982b877

Download Submit
memory/916-298-0x0000000074205000-0x0000000074206000-memory.dmp

Filesize
4KB

Download
memory/916-296-0x0000000003000000-0x000000000525F000-memory.dmp

Filesize
34.4MB

Download
memory/916-297-0x0000000076EE1000-0x0000000077001000-memory.dmp

Filesize
1.1MB

Download
memory/916-295-0x0000000003000000-0x000000000525F000-memory.dmp

Filesize
34.4MB

Download
memory/916-310-0x0000000003000000-0x000000000525F000-memory.dmp

Filesize
34.4MB

Download
memory/4008-299-0x0000000001C90000-0x0000000003EEF000-memory.dmp

Filesize
34.4MB

Download
memory/4008-307-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/4008-309-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/4008-311-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/4008-312-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download
memory/4008-315-0x0000000000A30000-0x0000000001C84000-memory.dmp

Filesize
18.3MB

Download

Analysis

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