guloader | d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad

General

Target

d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
Size

418KB
MD5

0b813c3349387a69277d7f8a0d20fe3d
SHA1

d0c4aa5fffba33d1f7c9c184cd3acb90f6a75650
SHA256

d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad
SHA512

d3b46abc8583f2a12c4e202392e97679147c5d1a691e1525bcf771f89902902740e503f5856574c5e7b8ad1303036485193f48f989201cf25a1ca08c79dc8c34
SSDEEP

12288:F4FAe+jtbt1JcAfGWpfnuayZzCeFPEG6w//j:YAe+jtbt1JcAlnnGC+R/j

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	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Loads dropped DLL 2 IoCs

pid	Process
2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Ever\Simplifikationens137\Kommandokarakterer.ini	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
3392	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2016 set thread context of 3392	2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe	91

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Fonts\Illustreringers\Oogametes.Rud	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.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	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 3392	2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe	91
PID 2016 wrote to memory of 3392	2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe	91
PID 2016 wrote to memory of 3392	2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe	91
PID 2016 wrote to memory of 3392	2016	d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe	91

C:\Users\Admin\AppData\Local\Temp\d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
"C:\Users\Admin\AppData\Local\Temp\d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2016
- C:\Users\Admin\AppData\Local\Temp\d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe
  "C:\Users\Admin\AppData\Local\Temp\d2473f318c1386699bdd8442cfe5455d44e18ec23d4b2482ffc82c7c227ab9ad.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:3392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

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:\Users\Admin\AppData\Local\Temp\nsm71E5.tmp\System.dll

Filesize
11KB

MD5
b0c77267f13b2f87c084fd86ef51ccfc

SHA1
f7543f9e9b4f04386dfbf33c38cbed1bf205afb3

SHA256
a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77

SHA512
f2b57a2eea00f52a3c7080f4b5f2bb85a7a9b9f16d12da8f8ff673824556c62a0f742b72be0fd82a2612a4b6dbd7e0fdc27065212da703c2f7e28d199696f66e

Download Submit
memory/2016-14-0x0000000002E00000-0x0000000003CC6000-memory.dmp

Filesize
14.8MB

Download
memory/2016-15-0x0000000077AC1000-0x0000000077BE1000-memory.dmp

Filesize
1.1MB

Download
memory/2016-16-0x00000000747B4000-0x00000000747B5000-memory.dmp

Filesize
4KB

Download
memory/2016-19-0x0000000002E00000-0x0000000003CC6000-memory.dmp

Filesize
14.8MB

Download
memory/3392-17-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3392-18-0x0000000001660000-0x0000000002526000-memory.dmp

Filesize
14.8MB

Download
memory/3392-20-0x0000000077B48000-0x0000000077B49000-memory.dmp

Filesize
4KB

Download
memory/3392-21-0x0000000001660000-0x0000000002526000-memory.dmp

Filesize
14.8MB

Download
memory/3392-22-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3392-23-0x0000000077AC1000-0x0000000077BE1000-memory.dmp

Filesize
1.1MB

Download

Analysis

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