75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4

Analysis

max time kernel
141s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
01/03/2024, 22:17

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General

Target
75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Size 439KB
Sample240301-17gnqsed92
SHA256 75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4
MD5 c50478e6f67bdfc89456e5046a79d85f
SHA1 38ce44ec2ff2f43dbe1d047010da41b5e4a1a82d
SHA512 0cdc26c66f565e17ec34397e7f55f9e4dbcdaf7b5901f11e16386f86d10bcf6776991eaf2ff62b8b0ae60f18f57912db6b34db7d77d197008cbfe4fef64b3569
SSDEEP 6144:dOizzb8uDxZCHlIZgEh5DyXglhiOizzb8uDxZCHlIZgEh5DyXglh:dZzb/DDCFIZggtLiZzb/DDCFIZggtL
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

aspackv2 persistence

Malware Config

Signatures

Detects executables packed with ASPack 15 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002319c-11.dat	INDICATOR_EXE_Packed_ASPack
behavioral2/files/0x000300000001e9a0-20.dat	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/3480-23-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-24-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-25-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-27-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-28-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-29-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-30-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-31-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-33-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-34-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-35-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-37-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral2/memory/4136-38-0x0000000000400000-0x000000000046E000-memory.dmp	INDICATOR_EXE_Packed_ASPack

ASPack v2.12-2.42 2 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000a00000002319c-11.dat	aspack_v212_v242
behavioral2/files/0x000300000001e9a0-20.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4136	DVIUOW.EXE

Modifies system executable filetype association 2 TTPs 3 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\odt\\OYJ.EXE \"%1\" %*"	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	DVIUOW.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\OYJ.EXE = "C:\\odt\\OYJ.EXE"	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe

Enumerates connected drives 3 TTPs 17 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)	\??\J:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\N:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\Q:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\E:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\P:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\V:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\M:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\H:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\I:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\L:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\O:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\R:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\S:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\T:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\G:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\U:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
File opened (read-only)	\??\K:	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe

Modifies registry class 15 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	DVIUOW.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file\shell\open	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command\ = "C:\\odt\\OYJ.EXE \"%1\""	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\odt\\OYJ.EXE \"%1\" %*"	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Users\\DVIUOW.EXE %1"	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\chm.file	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\scrfile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command\ = "C:\\odt\\OYJ.EXE %1"	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "C:\\odt\\OYJ.EXE \"%1\""	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inifile\shell\open\command	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4136	DVIUOW.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3480 wrote to memory of 4136	3480	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe	90
PID 3480 wrote to memory of 4136	3480	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe	90
PID 3480 wrote to memory of 4136	3480	75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe	90

C:\Users\Admin\AppData\Local\Temp\75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe
"C:\Users\Admin\AppData\Local\Temp\75bc277099c1194850b22a9596c48fa93613078b4f5a8291082120e13f9492a4.exe"
1⤵
- Modifies system executable filetype association
- Adds Run key to start application
- Enumerates connected drives
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3480
- C:\Users\DVIUOW.EXE
  C:\Users\DVIUOW.EXE
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:4136

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

DVIUOW.EXE

Path C:\Users\DVIUOW.EXE
Size 440KB
SHA256 c08accd57d0b20dd2a782cd623735c9e9aa3d1bfdfd735ac1316b22b847f047d
MD5 56fb30770a451f05fa81a850bd25cd65
SHA1 df016468fecec76fc586508a951c3a8147320fa6
SHA512 a4796ff06022a37e4630c98fae74a19bd1399019ce8017a1401b18871e5b2b61d37153e0b142267638e0fee4d53a453b8385ab9b5f01496caa596fbcfd1322c3
SSDEEP 6144:dOizzb8uDxZCHlIZgEh5DyXglhiOizzb8uDxZCHlIZgEh5DyXglh:dZzb/DDCFIZggtLiZzb/DDCFIZggtL
MD5 SHA1 SHA512 SSDEEP

Submit Download

OYJ.EXE

Path C:\odt\OYJ.EXE
Size 439KB
SHA256 dacd4bb7e79b900753b55b9b645f4b16bf725ee1923123958d3a117a25094d55
MD5 3de778b9890e3ed8952a2025648849ab
SHA1 d2ddfd9f63597bf23ccd1bf0a4f8b1a51d0d6ac8
SHA512 a3c2f3e2c7107a440821233278db96cded85b5914c82eab667943cc94736997af0e6ec6d0765c2036d8d0dc2cfad7fce9be52a7cd9235cdd64b2b6189fa1c053
SSDEEP 6144:dOizzb8uDxZCHlIZgEh5DyXglhiOizzb8uDxZCHlIZgEh5DyXglh:dZzb/DDCFIZggtLiZzb/DDCFIZggtL
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3480-23-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/3480-0-0x00000000021C0000-0x00000000021C1000-memory.dmp

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memory/4136-27-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-30-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-25-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-26-0x00000000021E0000-0x00000000021E1000-memory.dmp

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memory/4136-22-0x00000000021E0000-0x00000000021E1000-memory.dmp

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memory/4136-28-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-29-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-24-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-31-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-33-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-34-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-35-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-37-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/4136-38-0x0000000000400000-0x000000000046E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads