1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165

General

Target

1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
Size

11.7MB
MD5

51f468fa1f11ef59ad7fd5f339906661
SHA1

03887d2684aff18df484ca39c8f070a0bc725e4a
SHA256

1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165
SHA512

493e7d68f3ffdb6e9b0587457370253f72e3d6b2c6fa3bafb1e96dcb36db0e6b78b2a52bcf86c9b42f1bf260da639a1e88ca13d8a43ad9826ed4f680e9c3ba7f

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
580	irsetup.exe
764	alcodec.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00060000000125bb-56.dat	upx
behavioral1/files/0x00060000000125bb-58.dat	upx
behavioral1/files/0x00060000000125bb-59.dat	upx
behavioral1/files/0x00060000000125bb-57.dat	upx
behavioral1/files/0x00060000000125bb-61.dat	upx
behavioral1/files/0x00060000000125bb-65.dat	upx
behavioral1/files/0x00060000000125bb-69.dat	upx

Loads dropped DLL 14 IoCs

pid	Process
368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
580	irsetup.exe
764	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
4	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}\InprocServer32	irsetup.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{13DEF622-983C-4FA4-91CD-238C72DE4F3F}\InprocServer32\ThreadingModel = "both"	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}\ = "Elecard LC"	irsetup.exe
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}\ = "Elecard LC"	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}\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}\InprocServer32	irsetup.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
580	irsetup.exe
580	irsetup.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 368 wrote to memory of 580	368	1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe	28
PID 580 wrote to memory of 764	580	irsetup.exe	29
PID 580 wrote to memory of 764	580	irsetup.exe	29
PID 580 wrote to memory of 764	580	irsetup.exe	29
PID 580 wrote to memory of 764	580	irsetup.exe	29

C:\Users\Admin\AppData\Local\Temp\1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe
"C:\Users\Admin\AppData\Local\Temp\1f53d6f4fb02c8663b9d377570953d07c56df297674b7c3847d1697f0e5f8165.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:368
- 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-1-5-21-103686315-404690609-2047157615-1000"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Modifies registry class
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:580
- - 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:764

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/368-55-0x0000000075141000-0x0000000075143000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

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