guloader | 5be411dbc56e159ad1e746bbecacd2b43885fb45d664916316950f487ec26872

General

Target

Pepsico LLC RFQ Information.exe
Size

196KB
MD5

bf464a9ed6c19342db8d8b9f70946ad2
SHA1

1e8f803e2f7b51af246fe11861c09751bbe8cb07
SHA256

ef66ea0bcee19ccd3d2771a170ff218a3e43b27f1b18f24e08685cb4d3fe053a
SHA512

d98c9623cb60f8ab1526ba683589adfe2db1e28ab8b4ed2bdeddbdb70b8017de47f004058e3c45ef8e9b60d7421b0aeb842f2e16bf8a23fbedbfec5180effade
SSDEEP

3072:hw4gnScG4DI2dc0bKFfTb4qJN5S1THK0r8n1EIKuADl8x1BoXaoI10cnwATsU0Sz:h923Ol4qhS1uDEZuADlQEXah+kyFNy

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	Pepsico LLC RFQ Information.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	Pepsico LLC RFQ Information.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	Pepsico LLC RFQ Information.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

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2112	Pepsico LLC RFQ Information.exe
2724	Pepsico LLC RFQ Information.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 2724	2112	Pepsico LLC RFQ Information.exe	31

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Erubescite\Vinelike\Overstudious\Ringsler.Thr77	Pepsico LLC RFQ Information.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	Pepsico LLC RFQ Information.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Pepsico LLC RFQ Information.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2112	Pepsico LLC RFQ Information.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2724	2112	Pepsico LLC RFQ Information.exe	31
PID 2112 wrote to memory of 2724	2112	Pepsico LLC RFQ Information.exe	31
PID 2112 wrote to memory of 2724	2112	Pepsico LLC RFQ Information.exe	31
PID 2112 wrote to memory of 2724	2112	Pepsico LLC RFQ Information.exe	31
PID 2112 wrote to memory of 2724	2112	Pepsico LLC RFQ Information.exe	31

C:\Users\Admin\AppData\Local\Temp\Pepsico LLC RFQ Information.exe
"C:\Users\Admin\AppData\Local\Temp\Pepsico LLC RFQ Information.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\Pepsico LLC RFQ Information.exe
  "C:\Users\Admin\AppData\Local\Temp\Pepsico LLC RFQ Information.exe"
  2⤵
  - Checks QEMU agent file
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2724

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

\Users\Admin\AppData\Local\Temp\nstEA68.tmp\System.dll

Filesize
11KB

MD5
b8992e497d57001ddf100f9c397fcef5

SHA1
e26ddf101a2ec5027975d2909306457c6f61cfbd

SHA256
98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b

SHA512
8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c

Download Submit
memory/2112-8-0x00000000029E0000-0x0000000002AE1000-memory.dmp

Filesize
1.0MB

Download
memory/2112-9-0x00000000029E0000-0x0000000002AE1000-memory.dmp

Filesize
1.0MB

Download
memory/2112-10-0x0000000077AB1000-0x0000000077BB2000-memory.dmp

Filesize
1.0MB

Download
memory/2112-11-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/2112-26-0x00000000029E0000-0x0000000002AE1000-memory.dmp

Filesize
1.0MB

Download
memory/2724-13-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/2724-12-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2724-14-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2724-17-0x0000000077AB0000-0x0000000077C59000-memory.dmp

Filesize
1.7MB

Download
memory/2724-15-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

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