f5c5eace359aec6749e2f0916424f1284ecb5cf4f3b7d2678dd3fc1907925cec

Analysis

max time kernel
148s
max time network
150s
platform
windows10_x64
resource
win10v200430
submitted
19-07-2020 19:24

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General

Target

chthonic_2.23.15.1.vir.exe
Size

321KB
MD5

ba0af99c6373df740cc659bbab0782a1
SHA1

f54cab9b16699df4f7426d3906062bf780039111
SHA256

f5c5eace359aec6749e2f0916424f1284ecb5cf4f3b7d2678dd3fc1907925cec
SHA512

19c544b551de6a3593dd70b2fa5a7e4cd997102b63b25db7b1fd7c36f5a36d6f606750ebff956aa78839b65b5baf72b0e1259af7bb59359924478a2e9e383761

Score

8^/10

evasion trojan persistence

Malware Config

Signatures

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

chthonic_2.23.15.1.vir.exe

description	pid	process	target process
PID 1612 wrote to memory of 1372	1612	chthonic_2.23.15.1.vir.exe	winver.exe
PID 1612 wrote to memory of 1372	1612	chthonic_2.23.15.1.vir.exe	winver.exe
PID 1612 wrote to memory of 1372	1612	chthonic_2.23.15.1.vir.exe	winver.exe
PID 1612 wrote to memory of 1372	1612	chthonic_2.23.15.1.vir.exe	winver.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

winver.exe

pid process

1372 winver.exe
1372 winver.exe
1372 winver.exe
1372 winver.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winver.exe

pid process

1372 winver.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

winver.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA winver.exe

pid	process
1372	winver.exe
1372	winver.exe
1372	winver.exe
1372	winver.exe

pid	process
1372	winver.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	winver.exe

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winver.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\Policies\Explorer\Run	winver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\UWindowsMediaPlayer = "C:\\ProgramData\\Windows Media Player\\UWindowsMediaPlayer.exe"	winver.exe

C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.15.1.vir.exe
"C:\Users\Admin\AppData\Local\Temp\chthonic_2.23.15.1.vir.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1612

C:\Windows\SysWOW64\winver.exe
winver.exe
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Checks whether UAC is enabled
- Adds policy Run key to start application
PID:1372

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1372-0-0x0000000000000000-mapping.dmp

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