guloader | 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a

General

Target

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
Size

769KB
MD5

afb0ddc435628e52f8d026e2e01dead7
SHA1

919afcff7f0e4332b854f920817165b0910f15ea
SHA256

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a
SHA512

35a57c278675c77a7f239706308423f7965a5fa094deaef9c4e1774d1749878800181dbf3a2e9d7cd1679ee0c3789f50c59b6e85c7cbb20385d2b5fc5c57999b
SSDEEP

24576:JMwYlEZLYz1DBMgfpyED9WDHvBMg/Hv3Avr3I/SUiEW:JMweEKz1GgND9W9PovKWEW

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
Loads dropped DLL 1 IoCs

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

pid process

2580 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

pid	process
2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
2064	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

description	pid	process	target process
PID 2580 set thread context of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.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

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

pid process

2580 2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

description	pid	process	target process
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
PID 2580 wrote to memory of 2064	2580	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe	2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe

C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
"C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.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:2580
- C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe
  "C:\Users\Admin\AppData\Local\Temp\2597d299f220ba2dbee04bd903c3962e5a262e0686fab8f4ae581fe928d81c1a.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:2064

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

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Downloads

\Users\Admin\AppData\Local\Temp\nstB240.tmp\System.dll

Filesize
12KB

MD5
564bb0373067e1785cba7e4c24aab4bf

SHA1
7c9416a01d821b10b2eef97b80899d24014d6fc1

SHA256
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5

SHA512
22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472

Download Submit
memory/2064-18-0x0000000077950000-0x0000000077AF9000-memory.dmp

Filesize
1.7MB

Download
memory/2064-19-0x00000000004A0000-0x0000000001502000-memory.dmp

Filesize
16.4MB

Download
memory/2580-14-0x00000000037A0000-0x0000000004BD5000-memory.dmp

Filesize
20.2MB

Download
memory/2580-16-0x0000000077950000-0x0000000077AF9000-memory.dmp

Filesize
1.7MB

Download
memory/2580-15-0x0000000077951000-0x0000000077A52000-memory.dmp

Filesize
1.0MB

Download
memory/2580-17-0x00000000037A0000-0x0000000004BD5000-memory.dmp

Filesize
20.2MB

Download
memory/2580-25-0x00000000037A0000-0x0000000004BD5000-memory.dmp

Filesize
20.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads