guloader | 9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2

General

Target

9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
Size

617KB
MD5

6d3da95a3e1f5861a54c30dd61f80c02
SHA1

74e6fb42c2de33b6b9dcd45aa86db1b99c8c2135
SHA256

9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2
SHA512

70c23ed78a8d369c78073504d6bc4b5fd1ee89e7708318706d4c4108e2d2257381634b12326d546eb51c76fefc0d98cf7863c4ac6bc7857dfe46217ce4a87302
SSDEEP

6144:YYa6vEsNe5YZ0thEQftDn2IeudqgiYxOJ2Hd2Wn49rVzOpb4o4/aZJZCrXmxhz3f:YY+T5LbtDOgiYQQ9tUVm4d2d5c737+

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 2 IoCs

pid	Process
1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3516	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
3516	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1632 set thread context of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1244	3516	WerFault.exe	86

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	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3516	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
3516	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86
PID 1632 wrote to memory of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86
PID 1632 wrote to memory of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86
PID 1632 wrote to memory of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86
PID 1632 wrote to memory of 3516	1632	9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe	86

C:\Users\Admin\AppData\Local\Temp\9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
"C:\Users\Admin\AppData\Local\Temp\9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Local\Temp\9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe
  "C:\Users\Admin\AppData\Local\Temp\9c2d1e2dc9170158a8fef8393fd58306f918ceb15701465c4e21040be94233c2.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:3516
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 1472
    3⤵
    - Program crash
    PID:1244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3516 -ip 3516
1⤵
PID:3800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\nsl7B3D.tmp\System.dll

Filesize
12KB

MD5
cff85c549d536f651d4fb8387f1976f2

SHA1
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e

SHA256
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8

SHA512
531d6328daf3b86d85556016d299798fa06fefc81604185108a342d000e203094c8c12226a12bd6e1f89b0db501fb66f827b610d460b933bd4ab936ac2fd8a88

Download Submit
memory/1632-16-0x0000000004A30000-0x0000000005644000-memory.dmp

Filesize
12.1MB

Download
memory/1632-17-0x00000000776B1000-0x00000000777D1000-memory.dmp

Filesize
1.1MB

Download
memory/1632-18-0x0000000074515000-0x0000000074516000-memory.dmp

Filesize
4KB

Download
memory/1632-20-0x0000000004A30000-0x0000000005644000-memory.dmp

Filesize
12.1MB

Download
memory/1632-28-0x0000000004A30000-0x0000000005644000-memory.dmp

Filesize
12.1MB

Download
memory/3516-23-0x0000000077755000-0x0000000077756000-memory.dmp

Filesize
4KB

Download
memory/3516-22-0x0000000077738000-0x0000000077739000-memory.dmp

Filesize
4KB

Download
memory/3516-21-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3516-27-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3516-19-0x0000000001660000-0x0000000002274000-memory.dmp

Filesize
12.1MB

Download
memory/3516-29-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download
memory/3516-30-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3516-31-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3516-32-0x00000000776B1000-0x00000000777D1000-memory.dmp

Filesize
1.1MB

Download
memory/3516-33-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3516-35-0x0000000000401000-0x0000000000404000-memory.dmp

Filesize
12KB

Download

Analysis

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