1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165

Resubmissions

19/01/2022, 16:34

220119-t22y6abeh810

25/11/2021, 12:35

211125-pshrpsfbgm8

Analysis

max time kernel
133s
max time network
142s
platform
windows10_x64
resource
win10-en-20211104
submitted
25/11/2021, 12:35

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General

Target
1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
Size 11.7MB
Sample211125-pshrpsfbgm
SHA256 1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165
MD5 51f468fa1f11ef59ad7fd5f339906661
SHA1 03887d2684aff18df484ca39c8f070a0bc725e4a
SHA512 493e7d68f3ffdb6e9b0587457370253f72e3d6b2c6fa3bafb1e96dcb36db0e6b78b2a52bcf86c9b42f1bf260da639a1e88ca13d8a43ad9826ed4f680e9c3ba7f
MD5 SHA1 SHA512

Score

8^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2360	irsetup.exe
780	alcodec.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000500000001ab84-119.dat	upx
behavioral2/files/0x000500000001ab84-122.dat	upx

Loads dropped DLL 3 IoCs

pid	Process
2360	irsetup.exe
2360	irsetup.exe
780	alcodec.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

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
27	api.ipify.org

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Roaming\\Creative Labs Al32 Codec\\Filters\\LC.dll"	irsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{08C10075-CA5C-4EDE-A033-AD28827A2F66}	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{08C10075-CA5C-4EDE-A033-AD28827A2F66}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Roaming\\Creative Labs Al32 Codec\\Filters\\LC.dll"	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{08C10075-CA5C-4EDE-A033-AD28827A2F66}\InprocServer32\ThreadingModel = "both"	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}\ = "Elecard LC"	irsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}\InprocServer32	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}\InprocServer32\ThreadingModel = "both"	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{08C10075-CA5C-4EDE-A033-AD28827A2F66}\ = "Elecard LC"	irsetup.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{08C10075-CA5C-4EDE-A033-AD28827A2F66}\InprocServer32	irsetup.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2360	irsetup.exe
2360	irsetup.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3120 wrote to memory of 2360	3120	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	69
PID 3120 wrote to memory of 2360	3120	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	69
PID 3120 wrote to memory of 2360	3120	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	69
PID 2360 wrote to memory of 780	2360	irsetup.exe	71
PID 2360 wrote to memory of 780	2360	irsetup.exe	71
PID 2360 wrote to memory of 780	2360	irsetup.exe	71

C:\Users\Admin\AppData\Local\Temp\1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
"C:\Users\Admin\AppData\Local\Temp\1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3120
- C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
  "C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe" __IRAOFF:1810466 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe" "__IRCT:3" "__IRTSS:0" "__IRSID:S-1-5-21-1042495040-510797905-2613508344-1000"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Users\Admin\AppData\Roaming\Creative Labs Al32 Codec\alcodec.exe
    "C:\Users\Admin\AppData\Roaming\Creative Labs Al32 Codec\alcodec.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads