guloader | 29cf7d4a7fc61a36c2c987c64ef3324032ad654405b2c40bc9bcc53c19996e1b

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-01-2025 01:50

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General

Target

payment-wire transfer- (BT67798213454323235).exe
Size

116KB
MD5

c4f1b84a1c81384faccccd3ad9d948ff
SHA1

c76b717bd55e57773a47cc89d65ad3a89abc7e6e
SHA256

f459f48263d2cd947e104949954b64c697f476f37496b58ef5de69cbead3cf68
SHA512

8e58d3b89cb811a3c0c7a09770fcd966753ec97a6e26a58428c380992cdc124ba23b3a57a69e4a39f07958a9070fbeb7929bebd0b433fdd7da72776e06a9ebd6
SSDEEP

1536:/OpY5tZ45qltdQ8OQzFEUcOd3QXDluLQCWU5Z7CED3:15tC5qltK8jxEUcOw1EL

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader family
guloader
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

description	ioc	Process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	payment-wire transfer- (BT67798213454323235).exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	payment-wire transfer- (BT67798213454323235).exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1056	payment-wire transfer- (BT67798213454323235).exe
2652	payment-wire transfer- (BT67798213454323235).exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1056 set thread context of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31

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	payment-wire transfer- (BT67798213454323235).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	payment-wire transfer- (BT67798213454323235).exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1056	payment-wire transfer- (BT67798213454323235).exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1056	payment-wire transfer- (BT67798213454323235).exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1056 wrote to memory of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31
PID 1056 wrote to memory of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31
PID 1056 wrote to memory of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31
PID 1056 wrote to memory of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31
PID 1056 wrote to memory of 2652	1056	payment-wire transfer- (BT67798213454323235).exe	31

C:\Users\Admin\AppData\Local\Temp\payment-wire transfer- (BT67798213454323235).exe
"C:\Users\Admin\AppData\Local\Temp\payment-wire transfer- (BT67798213454323235).exe"
1⤵
- Checks QEMU agent file
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1056
- C:\Users\Admin\AppData\Local\Temp\payment-wire transfer- (BT67798213454323235).exe
  "C:\Users\Admin\AppData\Local\Temp\payment-wire transfer- (BT67798213454323235).exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1056-2-0x0000000000340000-0x0000000000357000-memory.dmp

Filesize
92KB

Download
memory/1056-4-0x0000000076EC0000-0x0000000077069000-memory.dmp

Filesize
1.7MB

Download
memory/1056-3-0x0000000076EC1000-0x0000000076FC2000-memory.dmp

Filesize
1.0MB

Download
memory/1056-5-0x0000000000340000-0x0000000000357000-memory.dmp

Filesize
92KB

Download
memory/1056-8-0x0000000000340000-0x0000000000357000-memory.dmp

Filesize
92KB

Download
memory/2652-6-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2652-9-0x0000000076EC0000-0x0000000077069000-memory.dmp

Filesize
1.7MB

Download
memory/2652-10-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download
memory/2652-12-0x0000000000400000-0x0000000000553000-memory.dmp

Filesize
1.3MB

Download