7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7

Analysis

max time kernel
137s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2022 07:41

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General

Target

7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe
Size

30KB
MD5

5fb2ee0096da9e518be4d4642a3e7fc1
SHA1

cbca38bdce0c380110d213e4cd33698ad3d28ec8
SHA256

7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7
SHA512

9b27f25adb8d05cb645ee1ad9c127e5654fdddc9d53278f3d523bd09af1cf077d4078f4ee66b31dff5835a78577940499d64d42005c31a7ba1e22fa316e7a581
SSDEEP

384:gacP6KngetUkbuAOJLeRjyoIFCcRGBrrQM+p9qWszqsZZICQyy2+DVAdafigZ:6P64UkBSyeh/RGBrrKqZJZYz2H4K2

Score

8^/10

evasion persistence

Malware Config

Signatures

Disables Task Manager via registry modification
evasion

Executes dropped EXE 1 IoCs

pid	Process
2596	frmwrk32.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Framework Windows = "frmwrk32.exe"	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	frmwrk32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Framework Windows = "frmwrk32.exe"	frmwrk32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\frmwrk32.exe	frmwrk32.exe
File opened for modification	C:\Windows\SysWOW64\uniq.tll	frmwrk32.exe
File created	C:\Windows\SysWOW64\frmwrk32.exe	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe
File opened for modification	C:\Windows\SysWOW64\frmwrk32.exe	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe

Suspicious use of SendNotifyMessage 5 IoCs

pid	Process
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe
2596	frmwrk32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2596	2492	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe	79
PID 2492 wrote to memory of 2596	2492	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe	79
PID 2492 wrote to memory of 2596	2492	7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe	79

System policy modification 1 TTPs 5 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoActiveDesktopChanges = "1"	frmwrk32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	frmwrk32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoSetActiveDesktop = "1"	frmwrk32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop	frmwrk32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop\NoChangingWallpaper = "1"	frmwrk32.exe

C:\Users\Admin\AppData\Local\Temp\7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe
"C:\Users\Admin\AppData\Local\Temp\7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Windows\SysWOW64\frmwrk32.exe
  C:\Windows\system32\frmwrk32.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - System policy modification
  PID:2596

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\frmwrk32.exe

Filesize
30KB

MD5
5fb2ee0096da9e518be4d4642a3e7fc1

SHA1
cbca38bdce0c380110d213e4cd33698ad3d28ec8

SHA256
7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7

SHA512
9b27f25adb8d05cb645ee1ad9c127e5654fdddc9d53278f3d523bd09af1cf077d4078f4ee66b31dff5835a78577940499d64d42005c31a7ba1e22fa316e7a581

Download Submit
C:\Windows\SysWOW64\frmwrk32.exe

Filesize
30KB

MD5
5fb2ee0096da9e518be4d4642a3e7fc1

SHA1
cbca38bdce0c380110d213e4cd33698ad3d28ec8

SHA256
7fecfe224eaf5a37456a99fdadb6ca23ba30946f9a28d555f5890b6bbc8faee7

SHA512
9b27f25adb8d05cb645ee1ad9c127e5654fdddc9d53278f3d523bd09af1cf077d4078f4ee66b31dff5835a78577940499d64d42005c31a7ba1e22fa316e7a581

Download Submit
memory/2492-135-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2596-132-0x0000000000000000-mapping.dmp

Download
memory/2596-136-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2596-137-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads