guloader | 98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6

General

Target

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
Size

100KB
MD5

b4dbd048b22d8e94490388cae3c59928
SHA1

d001c360adec029f459b03cdb7bcad0bcf419814
SHA256

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6
SHA512

496a36a47ad1e58b0433d3d983b9b5225ba31a7ce899f66f41dca732476c7acd32d8482e11c4dec007b9190cb370fbade45dc0a265579ece573d01e45fd0ad6b
SSDEEP

1536:1WWTwV4fVhubszPs45N/igfQAIqcc0423pN1lA6XVCiHX:5wVUPhzEWN/NoKj23r1lA6XVCiX

Score

10^/10

guloader downloader

Malware Config

Extracted

Family

guloader

C2

https://cdn.discordapp.com/attachments/807722001241210933/813865812821409822/ePbJss27.bin

xor.base64

Signatures

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

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

pid	process
1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
1560	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

description	pid	process	target process
PID 1940 set thread context of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

pid process

1940 98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

pid process

1940 98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

description	pid	process	target process
PID 1940 wrote to memory of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
PID 1940 wrote to memory of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
PID 1940 wrote to memory of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
PID 1940 wrote to memory of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
PID 1940 wrote to memory of 1560	1940	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe	98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe

C:\Users\Admin\AppData\Local\Temp\98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
"C:\Users\Admin\AppData\Local\Temp\98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Users\Admin\AppData\Local\Temp\98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe
  "C:\Users\Admin\AppData\Local\Temp\98be1a60aeeb3e42443c670b0e9f185c07b776e2347b8f4e58f7cc85c12fb3e6.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Modifies system certificate store
  PID:1560

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1560-62-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/1560-61-0x00000000004013DC-mapping.dmp

Download
memory/1560-66-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/1560-67-0x0000000076D10000-0x0000000076EB9000-memory.dmp

Filesize
1.7MB

Download
memory/1560-70-0x0000000076EF0000-0x0000000077070000-memory.dmp

Filesize
1.5MB

Download
memory/1560-71-0x00000000001B0000-0x00000000002B0000-memory.dmp

Filesize
1024KB

Download
memory/1560-72-0x0000000076EF0000-0x0000000077070000-memory.dmp

Filesize
1.5MB

Download
memory/1940-56-0x0000000000290000-0x000000000029D000-memory.dmp

Filesize
52KB

Download
memory/1940-57-0x0000000076D10000-0x0000000076EB9000-memory.dmp

Filesize
1.7MB

Download
memory/1940-59-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1940-63-0x0000000000290000-0x000000000029D000-memory.dmp

Filesize
52KB

Download
memory/1940-65-0x0000000076EF0000-0x0000000077070000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads