c260309caf1423f607919411112d81dfc106cfe31722535ccdda925a84674469

General

Target
b8009c7cbe45a431346158c9bba15114.exe
Size 229KB
Sample240306-wege2sec27
SHA256 c260309caf1423f607919411112d81dfc106cfe31722535ccdda925a84674469
MD5 b8009c7cbe45a431346158c9bba15114
SHA1 68380c9286a0a720a5aac19b6d43dd4efdfab926
SHA512 24b5978b2a689b4a676e5faff667b3566a9dc6664abd6ac58e7097d453a96e901d84906d639cf7b66f0bf262a909a673484579eb2eadae9b262ac670e1a65e47
SSDEEP 3072:Nf6kOcH+l7Qzo+vE3yNGDZ11oINAofvYlxXHp83MT9nUvUAmkdZNa6t3a7vFZQ3i:NtvW6o8NG9DAppTNUvJmWDaKaDFZ+
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

aspackv2

Malware Config

Signatures

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x00080000000231e7-4.dat	aspack_v212_v242

Executes dropped EXE 2 IoCs

pid	Process
5068	RUNDLL32.exe
4596	RUNDLL32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	RUNDLL32.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	RUNDLL32.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	RUNDLL32.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	RUNDLL32.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\DLL\RUNDLL32.exe	b8009c7cbe45a431346158c9bba15114.exe
File opened for modification	C:\Windows\DLL\RUNDLL32.exe	b8009c7cbe45a431346158c9bba15114.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies data under HKEY_USERS 16 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	RUNDLL32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents\Schemes\Apps\Explorer\Navigating	RUNDLL32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents\Schemes\Apps\Explorer\Navigating\.Current	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents\Schemes	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents\Schemes\Apps\Explorer	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	RUNDLL32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1601 = "0"	RUNDLL32.exe
Key created	\REGISTRY\USER\.DEFAULT\AppEvents\Schemes\Apps	RUNDLL32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	RUNDLL32.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	RUNDLL32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	RUNDLL32.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	RUNDLL32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4596	RUNDLL32.exe
4596	RUNDLL32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4904 wrote to memory of 5068	4904	b8009c7cbe45a431346158c9bba15114.exe	91
PID 4904 wrote to memory of 5068	4904	b8009c7cbe45a431346158c9bba15114.exe	91
PID 4904 wrote to memory of 5068	4904	b8009c7cbe45a431346158c9bba15114.exe	91
PID 4904 wrote to memory of 4872	4904	b8009c7cbe45a431346158c9bba15114.exe	93
PID 4904 wrote to memory of 4872	4904	b8009c7cbe45a431346158c9bba15114.exe	93
PID 4904 wrote to memory of 4872	4904	b8009c7cbe45a431346158c9bba15114.exe	93

C:\Users\Admin\AppData\Local\Temp\b8009c7cbe45a431346158c9bba15114.exe
"C:\Users\Admin\AppData\Local\Temp\b8009c7cbe45a431346158c9bba15114.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4904
- C:\Windows\DLL\RUNDLL32.exe
  C:\Windows\DLL\RUNDLL32.exe
  2⤵
  - Executes dropped EXE
  PID:5068
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\b8009c7cbe45a431346158c9bba15114.bat
  2⤵
  PID:4872

C:\Windows\DLL\RUNDLL32.exe
C:\Windows\DLL\RUNDLL32.exe
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

b8009c7cbe45a431346158c9bba15114.bat

Path C:\Users\Admin\AppData\Local\Temp\b8009c7cbe45a431346158c9bba15114.bat
Size 196B
SHA256 83a027b470637efc6cfebf30fffb5aafacc6de337b6d0390f62c74022c997012
MD5 d8b867780e9a1536503792a1c51174ab
SHA1 ea37aa0e5f323be9ead096f6fa581e1dd9311fa5
SHA512 ca846774df22f2c8a003a92a1b1b711340136bc5c7c15e0ab89abcd94a5e942cfd2efa7699811bb52c64a31aa1cab2350639a8830f116e67ce9c1c1e147b130d
MD5 SHA1 SHA512

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RUNDLL32.exe

Path C:\Windows\DLL\RUNDLL32.exe
Size 229KB
SHA256 c260309caf1423f607919411112d81dfc106cfe31722535ccdda925a84674469
MD5 b8009c7cbe45a431346158c9bba15114
SHA1 68380c9286a0a720a5aac19b6d43dd4efdfab926
SHA512 24b5978b2a689b4a676e5faff667b3566a9dc6664abd6ac58e7097d453a96e901d84906d639cf7b66f0bf262a909a673484579eb2eadae9b262ac670e1a65e47
SSDEEP 3072:Nf6kOcH+l7Qzo+vE3yNGDZ11oINAofvYlxXHp83MT9nUvUAmkdZNa6t3a7vFZQ3i:NtvW6o8NG9DAppTNUvJmWDaKaDFZ+
MD5 SHA1 SHA512 SSDEEP

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memory/4596-8-0x0000000000800000-0x0000000000801000-memory.dmp

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memory/4596-14-0x0000000000400000-0x00000000004A1000-memory.dmp

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memory/4596-16-0x0000000000800000-0x0000000000801000-memory.dmp

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memory/4904-0-0x00000000007A0000-0x00000000007A1000-memory.dmp

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memory/4904-12-0x0000000000400000-0x00000000004A1000-memory.dmp

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memory/5068-6-0x0000000000540000-0x0000000000541000-memory.dmp

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memory/5068-11-0x0000000000400000-0x00000000004A1000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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