guloader | 2153b8af04a231529dc2c1ec72a8535c9994b16db53fcdd8b58944b066dcc741

General

Target

bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
Size

269KB
MD5

0687d2967a7544a70b1af7b740af40e6
SHA1

76a18314d3e7005aca19ef36174b93264d35e421
SHA256

bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708
SHA512

432119a174bb8aac27b4edfb99f7dd98fafea7e1e72ab1d1136c0f6202452d9efed20be5777300ecd194314a889ea3195a338c46544ad3e39f61b0ad4dd5876f
SSDEEP

6144:oAVTvYW68CrncZaofffffffffffffffffffffffffffffffffffffffffffff2fR:oANE8CrcZU

Score

10^/10

guloader discovery downloader persistence

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	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\VURDER = "C:\\Users\\Admin\\AppData\\Local\\Temp\\alkaliniz\\Udtagning.vbs"	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
3132	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1904 set thread context of 3132	1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe	82

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	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 3132	1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe	82
PID 1904 wrote to memory of 3132	1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe	82
PID 1904 wrote to memory of 3132	1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe	82
PID 1904 wrote to memory of 3132	1904	bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe	82

C:\Users\Admin\AppData\Local\Temp\bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
"C:\Users\Admin\AppData\Local\Temp\bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe"
1⤵
- Checks QEMU agent file
- Adds Run key to start application
- 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:1904
- C:\Users\Admin\AppData\Local\Temp\bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe
  "C:\Users\Admin\AppData\Local\Temp\bc17992fdb1d5f78b149ade199607473293b684eb42827a33c992f2a86a39708.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1904-2-0x0000000002C30000-0x0000000002C42000-memory.dmp

Filesize
72KB

Download
memory/1904-3-0x0000000077821000-0x0000000077941000-memory.dmp

Filesize
1.1MB

Download
memory/1904-4-0x0000000002C30000-0x0000000002C42000-memory.dmp

Filesize
72KB

Download
memory/1904-5-0x0000000077821000-0x0000000077941000-memory.dmp

Filesize
1.1MB

Download
memory/1904-9-0x0000000002C30000-0x0000000002C42000-memory.dmp

Filesize
72KB

Download
memory/3132-6-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download
memory/3132-8-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3132-10-0x0000000000560000-0x0000000000660000-memory.dmp

Filesize
1024KB

Download
memory/3132-13-0x0000000000400000-0x000000000055D000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads