guloader | 859571a129deed67ebc60c7e2e5d48b1e1282121e11d1d696e9cac88fa7c3643

Resubmissions

24/10/2024, 15:47

241024-s77adswhlp10

24/10/2024, 15:44

241024-s6mvcs1flg10

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24/10/2024, 15:47

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General

Target
Device/HarddiskVolume4/Users/belia.peso.IBEROSTARHV.000/AppData/Local/Temp/Rar$EXa7092.35635/factura 563423.exe
Size 901KB
Sample241024-s77adswhlp
SHA256 057e7554f7a499adfd2c0a3485675fef4f602b23e2e0a1fd4e07da5b993e4ebf
MD5 6cb35cad38c80bbb552c99caf75f9371
SHA1 f1dcc7d9805738aaf1f30b32383674ea30706269
SHA512 638594b7228a8e747c34f1ab7916774feaff1ce58e875e64bb28cc6742472a305c5aa06e709ec708aad990d9e78ce828509af8a575b3fe62082699de1bb81734
SSDEEP 12288:TSlZI9dcNnPmsS7wkJW7DQFeh2FCCMntz6I8128TsXULDh+gDBf6j4Ydcv+l:2lTnpc/J2d2UVf+DLD1BbYGW
MD5 SHA1 SHA512 SSDEEP

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
2432	factura 563423.exe
2432	factura 563423.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	drive.google.com
5	drive.google.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\oecus\svante.Eft	factura 563423.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
980	factura 563423.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2432	factura 563423.exe
980	factura 563423.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2432 set thread context of 980	2432	factura 563423.exe	33

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\resources\sankthansaftnerne\clodpoll.saf	factura 563423.exe

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
2488	980	WerFault.exe	33

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	factura 563423.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	factura 563423.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
980	factura 563423.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
2432	factura 563423.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 2432 wrote to memory of 980	2432	factura 563423.exe	33
PID 980 wrote to memory of 2488	980	factura 563423.exe	35
PID 980 wrote to memory of 2488	980	factura 563423.exe	35
PID 980 wrote to memory of 2488	980	factura 563423.exe	35
PID 980 wrote to memory of 2488	980	factura 563423.exe	35

C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe
"C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- 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:2432
- C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe
  "C:\Users\Admin\AppData\Local\Temp\Device\HarddiskVolume4\Users\belia.peso.IBEROSTARHV.000\AppData\Local\Temp\Rar$EXa7092.35635\factura 563423.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:980
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 980 -s 456
    3⤵
    - Program crash
    PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

peripheries.lnk

Path C:\Users\Admin\Desktop\peripheries.lnk
Size 860B
SHA256 3d2ab3b3b6bab614b83a710c24bcddc0a468ad5347e47d11658b83ddcffb56c0
MD5 3f645fe4b4adce1d1472df12098eff41
SHA1 7a0765c17cbf95a6e4b9cefc58cd1680da327b76
SHA512 0df3d528004da1ddaabddd1e6f732e98905837e8f512bbd4bbed57e6d3c28a04ba85b3372372e9b4ac6a9420b564dde931601ae18ad3b84039eb4ea1b4caaf41
MD5 SHA1 SHA512

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peripheries.lnk

Path C:\Users\Admin\Desktop\peripheries.lnk
Size 830B
SHA256 99ef8ab7d11ea63fb02550b0882a4a2a537374449d44782bc504a8dedc00bdfc
MD5 c6fd1538cea9d4df087e2d323d7704d1
SHA1 ab425391c84cdbfa97dcbcc132251574ad2d214b
SHA512 adcad143ac989da96ed754875c4e999ee25d5c97c423b2503c7c1b7bee6c998c27483d22cdf85a90c7a8b23f93122652688ea383c1cc19589912af0bfb6188f9
MD5 SHA1 SHA512

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System.dll

Path \Users\Admin\AppData\Local\Temp\nsyD2F9.tmp\System.dll
Size 11KB
SHA256 3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac
MD5 cf85183b87314359488b850f9e97a698
SHA1 6b6c790037eec7ebea4d05590359cb4473f19aea
SHA512 fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b
SSDEEP 96:3IsUxO9udx4qYp7AJb76BykUbQMtHUOA5Iv+RnsrqeXV+d1g2IW9t2c+cEwF9oug:YVL7ikJb76BQUoUm+RnyXVYO2RvHoug
MD5 SHA1 SHA512 SSDEEP

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memory/980-24648-0x0000000000400000-0x0000000001462000-memory.dmp

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memory/980-24649-0x0000000077180000-0x0000000077329000-memory.dmp

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memory/980-24671-0x0000000000400000-0x0000000001462000-memory.dmp

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memory/980-24670-0x0000000000400000-0x0000000001462000-memory.dmp

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memory/980-24672-0x0000000000400000-0x0000000001462000-memory.dmp

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memory/2432-24644-0x00000000034C0000-0x0000000004D2B000-memory.dmp

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memory/2432-24645-0x0000000077181000-0x0000000077282000-memory.dmp

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memory/2432-24646-0x0000000077180000-0x0000000077329000-memory.dmp

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memory/2432-24647-0x00000000034C0000-0x0000000004D2B000-memory.dmp

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