f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982

General

Target

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
Size

358KB
MD5

0f1da65283dd3736e857710272c655de
SHA1

45c55062f4990cf39b9c1d19e7c4916eb7fb46d4
SHA256

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982
SHA512

9df60278b452d750c8c7023c359da24a8cbd153a29a6e9206a1b2fdc5eb2de4bd6a039eb9ac6f58838b2bad69d2f53fb1d845897781641f8581a2eaa62f8fa91
SSDEEP

6144:SKW9roklPNkYS6+ZOv5c23kiYpPKcPsN0aVGWoIl6+eCRXixBE7D3eQt:fW9rojYSf8c2A5PsHoY6+eCRSxk/

Score

9^/10

collection discovery persistence spyware stealer upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 5 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
C:\Windows\SysWOW64\msioyk32.dll	acprotect
\Windows\SysWOW64\msioyk32.dll	acprotect
\Windows\SysWOW64\msioyk32.dll	acprotect
\Windows\SysWOW64\msioyk32.dll	acprotect
\Windows\SysWOW64\msioyk32.dll	acprotect

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1216-55-0x0000000000400000-0x000000000046B000-memory.dmp	upx
C:\Windows\SysWOW64\msioyk32.dll	upx
\Windows\SysWOW64\msioyk32.dll	upx
\Windows\SysWOW64\msioyk32.dll	upx
\Windows\SysWOW64\msioyk32.dll	upx
\Windows\SysWOW64\msioyk32.dll	upx
behavioral1/memory/620-69-0x0000000010000000-0x0000000010086000-memory.dmp	upx
behavioral1/memory/620-70-0x0000000010000000-0x0000000010086000-memory.dmp	upx

Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

620 rundll32.exe
620 rundll32.exe
620 rundll32.exe
620 rundll32.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
620	rundll32.exe
620	rundll32.exe
620	rundll32.exe
620	rundll32.exe

Accesses Microsoft Outlook profiles 1 TTPs 1 IoCs

collection

Email Collection

T1114

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSIDLL = "C:\\Windows\\SysWOW64\\rundll32.exe msioyk32.dll,dujLAuclGJc"	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 2 IoCs

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

description	ioc	process
File created	C:\Windows\SysWOW64\msioyk32.dll	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
File opened for modification	C:\Windows\SysWOW64\msioyk32.dll	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1020 1216 WerFault.exe f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

pid	pid_target	process	target process
1020	1216	WerFault.exe	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

pid	process
1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

description	pid	process	target process
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 620	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	rundll32.exe
PID 1216 wrote to memory of 1020	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	WerFault.exe
PID 1216 wrote to memory of 1020	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	WerFault.exe
PID 1216 wrote to memory of 1020	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	WerFault.exe
PID 1216 wrote to memory of 1020	1216	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe	WerFault.exe

outlook_win_path 1 IoCs

Processes:

f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe

C:\Users\Admin\AppData\Local\Temp\f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe
"C:\Users\Admin\AppData\Local\Temp\f345cb0115c98f6ad8bbbfbf55f0ab035ba9bd844a55bfd27cdaaf7d63998982.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_win_path
PID:1216

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe msioyk32.dll,dujLAuclGJc
2⤵
- Loads dropped DLL
PID:620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1216 -s 340
2⤵
- Program crash
PID:1020

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\msioyk32.dll
Filesize
171KB

MD5
9696129062731de4abe9affa41ed4a37

SHA1
440473f718d85a397d5957325d2194639dfa158a

SHA256
444091942c6bb1b98ab202255e73d436f2ca30c5764b4f21137a75a7d9107ef4

SHA512
fb26a5cd2857691f323ac79dbdd782d14e7417582d600e90f76b7ffdc0b1401d10e42053dc424380b47ccaf0acdcdd01cf437bb0804660f10b3a3889d31ffff9

Download Submit
\Windows\SysWOW64\msioyk32.dll
Filesize
171KB

MD5
9696129062731de4abe9affa41ed4a37

SHA1
440473f718d85a397d5957325d2194639dfa158a

SHA256
444091942c6bb1b98ab202255e73d436f2ca30c5764b4f21137a75a7d9107ef4

SHA512
fb26a5cd2857691f323ac79dbdd782d14e7417582d600e90f76b7ffdc0b1401d10e42053dc424380b47ccaf0acdcdd01cf437bb0804660f10b3a3889d31ffff9

Download Submit
\Windows\SysWOW64\msioyk32.dll
Filesize
171KB

MD5
9696129062731de4abe9affa41ed4a37

SHA1
440473f718d85a397d5957325d2194639dfa158a

SHA256
444091942c6bb1b98ab202255e73d436f2ca30c5764b4f21137a75a7d9107ef4

SHA512
fb26a5cd2857691f323ac79dbdd782d14e7417582d600e90f76b7ffdc0b1401d10e42053dc424380b47ccaf0acdcdd01cf437bb0804660f10b3a3889d31ffff9

Download Submit
\Windows\SysWOW64\msioyk32.dll
Filesize
171KB

MD5
9696129062731de4abe9affa41ed4a37

SHA1
440473f718d85a397d5957325d2194639dfa158a

SHA256
444091942c6bb1b98ab202255e73d436f2ca30c5764b4f21137a75a7d9107ef4

SHA512
fb26a5cd2857691f323ac79dbdd782d14e7417582d600e90f76b7ffdc0b1401d10e42053dc424380b47ccaf0acdcdd01cf437bb0804660f10b3a3889d31ffff9

Download Submit
\Windows\SysWOW64\msioyk32.dll
Filesize
171KB

MD5
9696129062731de4abe9affa41ed4a37

SHA1
440473f718d85a397d5957325d2194639dfa158a

SHA256
444091942c6bb1b98ab202255e73d436f2ca30c5764b4f21137a75a7d9107ef4

SHA512
fb26a5cd2857691f323ac79dbdd782d14e7417582d600e90f76b7ffdc0b1401d10e42053dc424380b47ccaf0acdcdd01cf437bb0804660f10b3a3889d31ffff9

Download Submit
memory/620-60-0x0000000000000000-mapping.dmp

Download
memory/620-69-0x0000000010000000-0x0000000010086000-memory.dmp

Filesize
536KB

Download
memory/620-70-0x0000000010000000-0x0000000010086000-memory.dmp

Filesize
536KB

Download
memory/1020-62-0x0000000000000000-mapping.dmp

Download
memory/1216-59-0x00000000002E0000-0x000000000033A000-memory.dmp

Filesize
360KB

Download
memory/1216-56-0x00000000002E0000-0x000000000033A000-memory.dmp

Filesize
360KB

Download
memory/1216-55-0x0000000000400000-0x000000000046B000-memory.dmp

Filesize
428KB

Download
memory/1216-58-0x00000000020F0000-0x0000000002176000-memory.dmp

Filesize
536KB

Download
memory/1216-57-0x00000000020F0000-0x0000000002176000-memory.dmp

Filesize
536KB

Download
memory/1216-54-0x0000000074F01000-0x0000000074F03000-memory.dmp

Filesize
8KB

Download
memory/1216-68-0x00000000020F0000-0x0000000002176000-memory.dmp

Filesize
536KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads