guloader | 97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca

General

Target
97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
Size 457KB
Sample260810-rcjp6sgf62
SHA256 97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca
MD5 a9b33292b46c7536a34f812d16aae9fa
SHA1 d5d9cf48338890823f4897aa4db4a2e246f1ffad
SHA512 0d2c4a6a6d6bed0f91bde63dd61a887ab5a6125b9f01fd08aaa2a17b3d33b9c6bc10b645fe84bb64515acd20485e6a8e71133dbabd92824b9faf23f5195ac959
SSDEEP 6144:PXsKoGShOkrI7LtxQ+/fIMqDhkeHBqh2cV747dCKV4:PXOefIBhLUo2U7wu4
TLSH
T13FA47D41F8185CE2F8395672A87F9DB609D17D3B46E4196E2ADFF73A14F2212001BE1E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader persistence

Malware Config

Signatures

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

Loads dropped DLL 1 IoCs

pid	Process
5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe

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-1-5-21-552508041-2681165170-3229858294-1000\Software\Microsoft\Windows\CurrentVersion\Run\Tilhrsforholdenes243 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Sknhedskonkurrencers\\Sknsforretninger.exe"	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.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

Contacts third-party web service commonly abused for C2 1 TTPs 5 IoCs

Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

Web Service

T1102

flow	ioc
1	drive.google.com
11	drive.google.com
16	drive.google.com
19	drive.google.com
21	drive.google.com

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Bygningsteknikkerne.bin	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
5628	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.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	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5376 wrote to memory of 3176	5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe	90
PID 5376 wrote to memory of 5628	5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe	91
PID 5376 wrote to memory of 5628	5376	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe	91
PID 5628 wrote to memory of 1048	5628	97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe	93

C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
"C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5376
- C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
  "C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe"
  2⤵
  PID:3176
- C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
  "C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5628
- - C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe
    "C:\Users\Admin\AppData\Local\Temp\97e7c70270a2522d212ad556382d97477dba6730dccd421230a9f36cb97aa9ca.exe"
    3⤵
    PID:1048

Network

MITRE ATT&CK Enterprise v16

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

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsv6A4A.tmp\System.dll
Size 12KB
SHA256 23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 192639861e3dc2dc5c08bb8f8c7260d5
SHA1 58d30e460609e22fa0098bc27d928b689ef9af78
SHA512 6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc
SSDEEP 192:ljHcQ0qWTlt7wi5Aj/lM0sEWD/wtYbBjpNQybC7y+XZqE0QPi:R/Qlt7wiij/lMRv/9V4bfr
TLSH
T1B1427C1297B089F2F551493419667F2A6FBEAC5C13F405A3CFE304C63D212CB9839243
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5376-15-0x0000000005910000-0x00000000089D3000-memory.dmp

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memory/5376-16-0x0000000074705000-0x0000000074706000-memory.dmp

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memory/5376-18-0x0000000005910000-0x00000000089D3000-memory.dmp

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memory/5628-17-0x0000000001790000-0x0000000004853000-memory.dmp

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memory/5628-19-0x00000000004A0000-0x0000000001786000-memory.dmp

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memory/5628-20-0x0000000001790000-0x0000000004853000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads