ca19e71ae296e637960c96e402a22632e8aba1abe00db4df77ad10b470f92a37

Analysis

max time kernel
93s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/05/2024, 11:47

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General

Target

cc2ae7d197cad41ad672837405c5fe8c.exe
Size

324KB
MD5

cc2ae7d197cad41ad672837405c5fe8c
SHA1

e01e694f6cb37ceb73205c9ced8b42fdef3a8386
SHA256

ca19e71ae296e637960c96e402a22632e8aba1abe00db4df77ad10b470f92a37
SHA512

cf5ce629a2fb54fc9a804abc806487f45450fc813b3369821b5f45e4a02fc0083c983fa989495667dd22510319fe7068c8b9ec29d5af9d9cebf4626008e2de8d
SSDEEP

6144:yVTzU1kCV/w+p+pXd6I9dUhJZXAnBY+adSEm:ATzU13jspt6adqJhqBY+b

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1276	OKFNRRB.EXE

Modifies system executable filetype association 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Program Files (x86)\\ANGMJ.EXE \"%1\" %*"	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell	OKFNRRB.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ANGMJ.EXE = "C:\\Program Files (x86)\\ANGMJ.EXE"	cc2ae7d197cad41ad672837405c5fe8c.exe

Enumerates connected drives 3 TTPs 34 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)	\??\G:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\N:	OKFNRRB.EXE
File opened (read-only)	\??\P:	OKFNRRB.EXE
File opened (read-only)	\??\V:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\U:	OKFNRRB.EXE
File opened (read-only)	\??\J:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\N:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\K:	OKFNRRB.EXE
File opened (read-only)	\??\L:	OKFNRRB.EXE
File opened (read-only)	\??\V:	OKFNRRB.EXE
File opened (read-only)	\??\E:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\L:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\T:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\U:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\M:	OKFNRRB.EXE
File opened (read-only)	\??\Q:	OKFNRRB.EXE
File opened (read-only)	\??\H:	OKFNRRB.EXE
File opened (read-only)	\??\S:	OKFNRRB.EXE
File opened (read-only)	\??\T:	OKFNRRB.EXE
File opened (read-only)	\??\P:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\Q:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\S:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\R:	OKFNRRB.EXE
File opened (read-only)	\??\K:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\O:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\G:	OKFNRRB.EXE
File opened (read-only)	\??\I:	OKFNRRB.EXE
File opened (read-only)	\??\J:	OKFNRRB.EXE
File opened (read-only)	\??\H:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\I:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\M:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\R:	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened (read-only)	\??\E:	OKFNRRB.EXE
File opened (read-only)	\??\O:	OKFNRRB.EXE

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ANGMJ.EXE	cc2ae7d197cad41ad672837405c5fe8c.exe
File opened for modification	C:\Program Files (x86)\ANGMJ.EXE	cc2ae7d197cad41ad672837405c5fe8c.exe
File created	C:\Program Files (x86)\HBRP.EXE	OKFNRRB.EXE

Modifies registry class 38 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open	OKFNRRB.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "F:\\$RECYCLE.BIN\\OKFNRRB.EXE \"%1\""	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "F:\\$RECYCLE.BIN\\OKFNRRB.EXE \"%1\""	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	OKFNRRB.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "F:\\$RECYCLE.BIN\\OKFNRRB.EXE %1"	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile	OKFNRRB.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\Program Files (x86)\\ANGMJ.EXE %1"	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	cc2ae7d197cad41ad672837405c5fe8c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Program Files (x86)\\ANGMJ.EXE \"%1\" %*"	cc2ae7d197cad41ad672837405c5fe8c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell	OKFNRRB.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile	OKFNRRB.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 1276	1020	cc2ae7d197cad41ad672837405c5fe8c.exe	82
PID 1020 wrote to memory of 1276	1020	cc2ae7d197cad41ad672837405c5fe8c.exe	82
PID 1020 wrote to memory of 1276	1020	cc2ae7d197cad41ad672837405c5fe8c.exe	82

C:\Users\Admin\AppData\Local\Temp\cc2ae7d197cad41ad672837405c5fe8c.exe
"C:\Users\Admin\AppData\Local\Temp\cc2ae7d197cad41ad672837405c5fe8c.exe"
1⤵
- Modifies system executable filetype association
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1020
- F:\$RECYCLE.BIN\OKFNRRB.EXE
  F:\$RECYCLE.BIN\OKFNRRB.EXE
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Enumerates connected drives
  - Drops file in Program Files directory
  - Modifies registry class
  PID:1276

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

F:\$RECYCLE.BIN\OKFNRRB.EXE

Filesize
325KB

MD5
8966c2dcf291d735adb31f756a8a0c4d

SHA1
0a122069c1329d402ab09adbc6895d09face961a

SHA256
e68220880f2e5114bfd52e9d2e960b1abbcadf62dd1b568d999c281aba13a3be

SHA512
a5968b85c5f6ef4cc684956a170169693ce59f1fee070db359544c0c35a6775fe9c51740de4b33b6796d3db4817d300a4646551eca76ae07a07e4c4441ca2df4

Download Submit
memory/1020-0-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1020-1-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1020-2-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1020-30-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1276-25-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1276-24-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/1276-26-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/1276-28-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads