guloader | c14a2e80074e63cfcbc21b2d9da8edaf6549f436ac8060b32a88cdac6604e52c

General

Target

RFQ_SRC02252017-pdf.scr
Size

724KB
MD5

11f41ca243c031d073ca13d1aa0e9a29
SHA1

ba4eb2a551a053f3f222ce0c5039e5b05cca880e
SHA256

7a0f824a21b8f5d26bf8536e2f5958514b6975d54722418719c8e919734a3986
SHA512

04cb6f3b2bd9ea3a512324741eae29f409a25d1bd1b4d12279c0260841301a1d9e67644df825df0c8f4b58781dc5814909baf49019a7af22696364ced9bc6939
SSDEEP

12288:/lIbMYOj7pofFqL35onwWnfHX7Z+ORbHH2PQb:/9YOnpD35snP7Z+OhHhb

Score

10^/10

guloader warzonerat discovery downloader infostealer persistence rat

Malware Config

Extracted

Family

warzonerat

C2

196.251.90.63:29389

Signatures

Guloader family
guloader
Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
WarzoneRat, AveMaria
WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.
rat infostealer warzonerat
Warzonerat family
warzonerat

Warzone RAT payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4176-40-0x0000000000470000-0x00000000016C4000-memory.dmp	warzonerat
behavioral2/memory/4176-43-0x0000000000470000-0x00000000016C4000-memory.dmp	warzonerat
behavioral2/memory/4176-44-0x0000000000470000-0x00000000016C4000-memory.dmp	warzonerat

Downloads MZ/PE file 1 IoCs

flow	pid	Process
24	2068	Process not Found

Loads dropped DLL 1 IoCs

pid	Process
1232	RFQ_SRC02252017-pdf.scr

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2656314083-4170277356-267438488-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Befolkningsgruppe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Eksponentialfunktionen\\microminiaturise.exe"	RFQ_SRC02252017-pdf.scr

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
4176	RFQ_SRC02252017-pdf.scr

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1232	RFQ_SRC02252017-pdf.scr
4176	RFQ_SRC02252017-pdf.scr

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Redwing.ini	RFQ_SRC02252017-pdf.scr

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\unstates.Kap233	RFQ_SRC02252017-pdf.scr

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
3604	4176	WerFault.exe	96

System Location Discovery: System Language Discovery 1 TTPs 3 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	RFQ_SRC02252017-pdf.scr
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RFQ_SRC02252017-pdf.scr

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2936	MicrosoftEdgeUpdate.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral2/files/0x000d000000023c60-25.dat	nsis_installer_1
behavioral2/files/0x000d000000023c60-25.dat	nsis_installer_2

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1232	RFQ_SRC02252017-pdf.scr

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 4176	1232	RFQ_SRC02252017-pdf.scr	96
PID 1232 wrote to memory of 4176	1232	RFQ_SRC02252017-pdf.scr	96
PID 1232 wrote to memory of 4176	1232	RFQ_SRC02252017-pdf.scr	96
PID 1232 wrote to memory of 4176	1232	RFQ_SRC02252017-pdf.scr	96

C:\Users\Admin\AppData\Local\Temp\RFQ_SRC02252017-pdf.scr
"C:\Users\Admin\AppData\Local\Temp\RFQ_SRC02252017-pdf.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Users\Admin\AppData\Local\Temp\RFQ_SRC02252017-pdf.scr
  "C:\Users\Admin\AppData\Local\Temp\RFQ_SRC02252017-pdf.scr" /S
  2⤵
  - Adds Run key to start application
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  PID:4176
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4176 -s 1856
    3⤵
    - Program crash
    PID:3604

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI1IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODM0MTAiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NTUzNjg2NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0ODkzNzc4NjM5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2936

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4176 -ip 4176
1⤵
PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Eksponentialfunktionen\microminiaturise.exe

Filesize
724KB

MD5
11f41ca243c031d073ca13d1aa0e9a29

SHA1
ba4eb2a551a053f3f222ce0c5039e5b05cca880e

SHA256
7a0f824a21b8f5d26bf8536e2f5958514b6975d54722418719c8e919734a3986

SHA512
04cb6f3b2bd9ea3a512324741eae29f409a25d1bd1b4d12279c0260841301a1d9e67644df825df0c8f4b58781dc5814909baf49019a7af22696364ced9bc6939

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsjC2D6.tmp\System.dll

Filesize
11KB

MD5
a436db0c473a087eb61ff5c53c34ba27

SHA1
65ea67e424e75f5065132b539c8b2eda88aa0506

SHA256
75ed40311875312617d6711baed0be29fcaee71031ca27a8d308a72b15a51e49

SHA512
908f46a855480af6eacb2fb64de0e60b1e04bbb10b23992e2cf38a4cbebdcd7d3928c4c022d7ad9f7479265a8f426b93eef580afec95570e654c360d62f5e08d

Download Submit
memory/1232-18-0x00000000030A0000-0x0000000004D50000-memory.dmp

Filesize
28.7MB

Download
memory/1232-20-0x00000000778E1000-0x0000000077A01000-memory.dmp

Filesize
1.1MB

Download
memory/1232-21-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1232-22-0x00000000030A0000-0x0000000004D50000-memory.dmp

Filesize
28.7MB

Download
memory/4176-23-0x00000000016D0000-0x0000000003380000-memory.dmp

Filesize
28.7MB

Download
memory/4176-24-0x00000000016D0000-0x0000000003380000-memory.dmp

Filesize
28.7MB

Download
memory/4176-40-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4176-42-0x00000000016D0000-0x0000000003380000-memory.dmp

Filesize
28.7MB

Download
memory/4176-43-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download
memory/4176-44-0x0000000000470000-0x00000000016C4000-memory.dmp

Filesize
18.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads