aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b

General

Target

aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
Size

386KB
MD5

54bf1b3cec52227275db8ce09c1147d1
SHA1

b7c6a665a80ea501fa57bae0be18156e11720ef5
SHA256

aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b
SHA512

48b6651613d10df244efa4ddc932eceb612309e4fd1bd543c9c6553a831514a61bc16c060aa4bcd365f8e01efd55201f49c8a9dc923399b87386a0a4b23290d2
SSDEEP

6144:lvIgW9gaNaoK0zat8GzwzkIXEZVAyqoK0zat8GzwzkIXfYnPYJgFMNk:lQNiWK0qjIUwy7K0qjIQnAGUk

Score

10^/10

persistence upx

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\drivers\spools.exe	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File created	C:\Windows\SysWOW64\drivers\spools.exe	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Schedule\ImagePath = "C:\\Windows\\system32\\drivers\\spools.exe"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3840-132-0x0000000000400000-0x0000000001564000-memory.dmp	upx
behavioral2/memory/3840-135-0x0000000000400000-0x0000000001564000-memory.dmp	upx

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

Enumerates connected drives 3 TTPs 20 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)	\??\T:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\F:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\K:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\M:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\P:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\Q:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\R:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\S:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\X:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\J:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\L:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\H:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\N:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\O:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\U:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\W:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\E:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\G:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\I:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
File opened (read-only)	\??\V:	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*"	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3840 wrote to memory of 5048	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	83
PID 3840 wrote to memory of 5048	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	83
PID 3840 wrote to memory of 5048	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	83
PID 3840 wrote to memory of 1128	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	85
PID 3840 wrote to memory of 1128	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	85
PID 3840 wrote to memory of 1128	3840	aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe	85

C:\Users\Admin\AppData\Local\Temp\aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe
"C:\Users\Admin\AppData\Local\Temp\aa551d240b4dbec0f07e90e49ed9fab4b699954908e39b0848bcb80e0db3290b.exe"
1⤵
- Modifies system executable filetype association
- Drops file in Drivers directory
- Sets service image path in registry
- Adds Run key to start application
- Enumerates connected drives
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3840
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c rmdir /S /Q "C:\Users\Admin\Cookies\"
  2⤵
  PID:5048
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c rmdir /S /Q "C:\Users\Admin\Application Data\Macromedia\Flash Player\"
  2⤵
  PID:1128

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3840-132-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download
memory/3840-135-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads