dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787

General

Target

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
Size

204KB
MD5

9dc85e494b87866a3132ffe13126a129
SHA1

75933e0355db4bbca4ef3ea291d4c239d8e8577a
SHA256

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787
SHA512

0ed69639530bbcc8dc4ccbba704c6fa843625eab149950a2f78a7a90b30a35bee0123d9c6bb057da2c71ed120114784b13e19c589f0efffa0e91a7d1932fad48
SSDEEP

3072:Amo8W8J0tQ9nLHbB9W0c1TqECzR/mkSYGrl9ymgYUWOL:bw+4QxL7B9W0c1RCzR/fSml7

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Processes:

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exeyaouki.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	yaouki.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe

Executes dropped EXE 1 IoCs

Processes:

yaouki.exe

pid process

3228 yaouki.exe

pid	process
3228	yaouki.exe

Adds Run key to start application 2 TTPs 27 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

yaouki.exedccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /i"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /s"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /d"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /u"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /z"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /k"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /t"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /e"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /b"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /j"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /n"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /c"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /f"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /a"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /x"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /m"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /q"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /g"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /l"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /w"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /y"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /h"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /l"	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /v"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /o"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /r"	yaouki.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\yaouki = "C:\\Users\\Admin\\yaouki.exe /p"	yaouki.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exeyaouki.exe

pid	process
3008	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
3008	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe
3228	yaouki.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exeyaouki.exe

pid process

3008 dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
3228 yaouki.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe

description	pid	process	target process
PID 3008 wrote to memory of 3228	3008	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe	yaouki.exe
PID 3008 wrote to memory of 3228	3008	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe	yaouki.exe
PID 3008 wrote to memory of 3228	3008	dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe	yaouki.exe

C:\Users\Admin\AppData\Local\Temp\dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe
"C:\Users\Admin\AppData\Local\Temp\dccaa3a4c1bf6870ac51f28461750069b39339149b95562d3093fc2573bec787.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3008

C:\Users\Admin\yaouki.exe
"C:\Users\Admin\yaouki.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\yaouki.exe

Filesize
204KB

MD5
1018926b49f59c73a0b3fe41167ad4ef

SHA1
cbfa098c8fabd140a9182aab1aab13aa5f54979e

SHA256
0ddadaf3bd8d19fe33981c5b0297ff4962e56e38c7d6e28bd346800351684a81

SHA512
1c49484b907668a73e086aa3262794d117d9141d16a65e8a9d7933f31773d15341da43cbd8dd1dd43d8269abcab11efe5dbcf386d760591cf883965ab87f8a45

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads