33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc

General

Target

33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
Size

152KB
MD5

12091b28287fbafd977157966311df00
SHA1

11dbcc8bdc4a7372fcd34b2e3e9459190704211b
SHA256

33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc
SHA512

73fef38b153ff6f41884fb0d13b3b95f1c342e07c99031dd7f79584142f965792bac47e1f27d296460c23d4d0dd74df4ea3c8652fa14a6acb377b45fbc544391
SSDEEP

3072:bL3pVyGSV8i/AR8n0h7n9MXexhn5V7Bs/cJ1:fpVyGUAFTjks1

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\Microsoft\Windows\CurrentVersion\run	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\X:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\S:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\O:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\L:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\G:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\Y:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\K:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\F:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\U:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\T:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\R:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\N:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\J:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\I:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\E:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\V:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\W:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\Q:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\P:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\M:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\H:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened (read-only)	\??\Z:	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\autorun.inf	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
File opened for modification	C:\Documents and Settings\Admin\Local Settings\Application Data\Microsoft\CD Burning\autorun.inf	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\PROGRAM FILES (X86)\ADOBE\ACROBAT READER DC\READER\ACRORD32.EXE	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4960	5060	WerFault.exe	79

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5060	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
5060	33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe

C:\Users\Admin\AppData\Local\Temp\33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe
"C:\Users\Admin\AppData\Local\Temp\33b66f540bc2d1e081951ab06b7ffe520f270cfc37118f0c32b4596f5635f8dc.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Adds Run key to start application
- Enumerates connected drives
- Drops autorun.inf file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 724
  2⤵
  - Program crash
  PID:4960