970720560dfd7943751a84cc89c6361800abb98cb23e9daa66c459cacebd3e92

General

Target

tasks_137.vir.exe
Size

137KB
MD5

54a79ec504774ba90fdb75e361ab8273
SHA1

5f9a3d9c66b2a77fc81d6e9b330aa5a8e87b00e4
SHA256

970720560dfd7943751a84cc89c6361800abb98cb23e9daa66c459cacebd3e92
SHA512

00ab17a16a1ca2dab7ea0a0f65d81945e456a4b0653aa49942dfe67b4916491f4b6885b59fffc35adc756b795526ba1a6ef77a48185c917f71702c83ebeb9275

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 3 IoCs

Processes:

winsec.exeohhuzyh.exeohhuzyh.exe

pid process

1420 winsec.exe
452 ohhuzyh.exe
836 ohhuzyh.exe

pid	process
1420	winsec.exe
452	ohhuzyh.exe
836	ohhuzyh.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

ohhuzyh.exe

pid	process
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe
836	ohhuzyh.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

736 cmd.exe
Drops file in Windows directory 1 IoCs

Processes:

tasks_137.vir.exe

description ioc process

File created C:\Windows\Tasks\Security Center Update - 3297039994.job tasks_137.vir.exe
Loads dropped DLL 1 IoCs

Processes:

tasks_137.vir.exe

pid process

608 tasks_137.vir.exe

pid	process
736	cmd.exe

description	ioc	process
File created	C:\Windows\Tasks\Security Center Update - 3297039994.job	tasks_137.vir.exe

pid	process
608	tasks_137.vir.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

tasks_137.vir.exeohhuzyh.exeohhuzyh.exe

description	pid	process	target process
PID 608 wrote to memory of 452	608	tasks_137.vir.exe	ohhuzyh.exe
PID 608 wrote to memory of 452	608	tasks_137.vir.exe	ohhuzyh.exe
PID 608 wrote to memory of 452	608	tasks_137.vir.exe	ohhuzyh.exe
PID 608 wrote to memory of 452	608	tasks_137.vir.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 452 wrote to memory of 836	452	ohhuzyh.exe	ohhuzyh.exe
PID 608 wrote to memory of 736	608	tasks_137.vir.exe	cmd.exe
PID 608 wrote to memory of 736	608	tasks_137.vir.exe	cmd.exe
PID 608 wrote to memory of 736	608	tasks_137.vir.exe	cmd.exe
PID 608 wrote to memory of 736	608	tasks_137.vir.exe	cmd.exe
PID 836 wrote to memory of 1796	836	ohhuzyh.exe	ctfmon.exe
PID 836 wrote to memory of 1796	836	ohhuzyh.exe	ctfmon.exe
PID 836 wrote to memory of 1796	836	ohhuzyh.exe	ctfmon.exe
PID 836 wrote to memory of 1796	836	ohhuzyh.exe	ctfmon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ohhuzyh.exe

pid process

836 ohhuzyh.exe
836 ohhuzyh.exe
Modifies Internet Explorer settings 1 TTPs 1 IoCs
adware spyware

Modify Registry
T1112

Processes:

ohhuzyh.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Main ohhuzyh.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Internet Explorer\Main	ohhuzyh.exe

Drops file in System32 directory 2 IoCs

Processes:

tasks_137.vir.exe

description	ioc	process
File created	C:\Windows\SysWOW64\winsec.exe	tasks_137.vir.exe
File opened for modification	C:\Windows\SysWOW64\winsec.exe	tasks_137.vir.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ohhuzyh.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	ohhuzyh.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\1860988234 = "C:\\Users\\Admin\\AppData\\Roaming\\Ciygyc\\ohhuzyh.exe"	ohhuzyh.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	ohhuzyh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\1860988234 = "C:\\Users\\Admin\\AppData\\Roaming\\Ciygyc\\ohhuzyh.exe"	ohhuzyh.exe

C:\Users\Admin\AppData\Local\Temp\tasks_137.vir.exe
"C:\Users\Admin\AppData\Local\Temp\tasks_137.vir.exe"
1⤵
- Drops file in Windows directory
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- Drops file in System32 directory
PID:608

C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe
"C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
- Adds Run key to start application
PID:452

C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe
"C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe" -child
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Suspicious use of SetWindowsHookEx
- Modifies Internet Explorer settings
PID:836

C:\Windows\SysWOW64\ctfmon.exe
ctfmon.exe
4⤵
PID:1796

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp2e1390b8.bat"
2⤵
- Deletes itself
PID:736

C:\Windows\SysWOW64\winsec.exe
"C:\Windows\SysWOW64\winsec.exe" -service "C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe"
1⤵
- Executes dropped EXE
PID:1420

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2e1390b8.bat

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C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe

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C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe

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C:\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\FAHCQLL5.txt

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C:\Windows\SysWOW64\winsec.exe

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C:\Windows\SysWOW64\winsec.exe

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\Users\Admin\AppData\Roaming\Ciygyc\ohhuzyh.exe

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memory/452-4-0x0000000000000000-mapping.dmp

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memory/736-13-0x0000000000000000-mapping.dmp

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memory/836-11-0x0000000000000000-mapping.dmp

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memory/836-10-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

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memory/836-9-0x00000000001D0000-0x00000000001D0002-memory.dmp

Filesize
2B

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memory/836-7-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

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memory/836-6-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

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memory/1796-15-0x0000000000000000-mapping.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads