guloader | e3471dc1dda5a8259a85c90f5a66c60fb1f3b4e5b45cb3f3f49a43d97888fef9

General

Target

Pepsico LLC RFQ Information.exe
Size

476KB
MD5

03488a1b8a6a8c42d18a63a68ca789d7
SHA1

2b46352078bd5de68e50cd16b7923f546e046602
SHA256

670532cd42859deefb166e5ed29997e67f1f9902a561d016fadf4c82f2f8f752
SHA512

762eecfd0a27242a339a052b75401c0fd190e1e54d244c26bd4fc9ec1e84237feb9f3d8d63f72761efefd80e704ac6a9e7c2d946006dbb9d8325fd63e02b938a
SSDEEP

12288:yY9BpM9pWRYjv8ympaWrzro1APuJhPlmeB:yxozM/jB

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
2488	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
2488	Pepsico LLC RFQ Information.exe
2732	Pepsico LLC RFQ Information.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2488 set thread context of 2732	2488	Pepsico LLC RFQ Information.exe	31

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\0409\Fibrins\Prveklude\Bedsteveninderne.Abc	Pepsico LLC RFQ Information.exe
File opened for modification	C:\Windows\resources\Fumigates.Tri	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
2488	Pepsico LLC RFQ Information.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 2732	2488	Pepsico LLC RFQ Information.exe	31
PID 2488 wrote to memory of 2732	2488	Pepsico LLC RFQ Information.exe	31
PID 2488 wrote to memory of 2732	2488	Pepsico LLC RFQ Information.exe	31
PID 2488 wrote to memory of 2732	2488	Pepsico LLC RFQ Information.exe	31
PID 2488 wrote to memory of 2732	2488	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 Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2488
- 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:2732

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\nsjD950.tmp\System.dll

Filesize
11KB

MD5
75ed96254fbf894e42058062b4b4f0d1

SHA1
996503f1383b49021eb3427bc28d13b5bbd11977

SHA256
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7

SHA512
58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4

Download Submit
memory/2488-9-0x0000000003DD0000-0x0000000003F91000-memory.dmp

Filesize
1.8MB

Download
memory/2488-11-0x0000000003DD0000-0x0000000003F91000-memory.dmp

Filesize
1.8MB

Download
memory/2488-12-0x0000000003DD0000-0x0000000003F91000-memory.dmp

Filesize
1.8MB

Download
memory/2488-13-0x0000000077271000-0x0000000077372000-memory.dmp

Filesize
1.0MB

Download
memory/2488-14-0x0000000077270000-0x0000000077419000-memory.dmp

Filesize
1.7MB

Download
memory/2488-28-0x0000000003DD0000-0x0000000003F91000-memory.dmp

Filesize
1.8MB

Download
memory/2732-16-0x0000000077270000-0x0000000077419000-memory.dmp

Filesize
1.7MB

Download
memory/2732-15-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2732-17-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/2732-18-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download

Analysis

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