guloader | 66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e

General

Target

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
Size

139KB
MD5

cc280cbaa1cdde9b203348512a594a5d
SHA1

c9a6b936c28089bd779d3153056b1d7cbc9d0854
SHA256

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e
SHA512

6677d2096e27d4a810ee4a3bc8070a0829128b008536e18fe4d06511f6cf40ec4698c3f4a1a30afa972471acdf3d220407607fbe98c44bed9f0b4b86e2e758d6

Score

10^/10

guloader downloader

Malware Config

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:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

Loads dropped DLL 1 IoCs

Processes:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

pid process

1620 66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

pid	process
1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
940	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

description	pid	process	target process
PID 1620 set thread context of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

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

System Information Discovery
T1082
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

pid process

1620 66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

description	pid	process	target process
PID 1620 wrote to memory of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
PID 1620 wrote to memory of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
PID 1620 wrote to memory of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
PID 1620 wrote to memory of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
PID 1620 wrote to memory of 940	1620	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe	66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe

C:\Users\Admin\AppData\Local\Temp\66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
"C:\Users\Admin\AppData\Local\Temp\66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1620

C:\Users\Admin\AppData\Local\Temp\66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe
"C:\Users\Admin\AppData\Local\Temp\66969ac84d6e89fc43c6204653ee0b6bf727fa115f802549e9469027a3dd847e.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsd52A4.tmp\System.dll
Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/940-59-0x00000000004034F7-mapping.dmp

Download
memory/940-60-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/940-63-0x00000000001C0000-0x00000000002C0000-memory.dmp

Filesize
1024KB

Download
memory/940-66-0x0000000077840000-0x00000000779E9000-memory.dmp

Filesize
1.7MB

Download
memory/940-67-0x0000000077A20000-0x0000000077BA0000-memory.dmp

Filesize
1.5MB

Download
memory/1620-54-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/1620-56-0x0000000003A10000-0x0000000003B27000-memory.dmp

Filesize
1.1MB

Download
memory/1620-61-0x0000000077840000-0x00000000779E9000-memory.dmp

Filesize
1.7MB

Download
memory/1620-62-0x0000000077A20000-0x0000000077BA0000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads