e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e

Analysis

max time kernel
38s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 06:39

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General

Target

e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe
Size

76KB
MD5

ce3b69f2fd64ec19b834c96785bdcc46
SHA1

0d8ac587bd92c7d5d1bf05ae1475c91140881db2
SHA256

e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e
SHA512

56fdcf6c672d041b5b7dfce34bdd9ab4e16a4d7ce86a79a2610be7ef5516430de59a405a1576ad3fd970a9c5390fb6eae81bce3ffb56334275408ddc74dbe0c6
SSDEEP

768:Q5P4fR08PmZsVwCtCNL5U2b1CY/g/7Gr8Q/apUZlrTVU9yu1uOpavb:QCTgP1CgY74lrTVU9yu1uOub

Score

10^/10

discovery evasion persistence

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	coujaan.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe

Executes dropped EXE 1 IoCs

pid	Process
3748	coujaan.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\coujaan = "C:\\Users\\Admin\\coujaan.exe"	coujaan.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	coujaan.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe
3748	coujaan.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
920	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe
3748	coujaan.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 3748	920	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe	85
PID 920 wrote to memory of 3748	920	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe	85
PID 920 wrote to memory of 3748	920	e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe	85
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81
PID 3748 wrote to memory of 920	3748	coujaan.exe	81

C:\Users\Admin\AppData\Local\Temp\e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe
"C:\Users\Admin\AppData\Local\Temp\e77d3d81ef3e7ecdab0d00d25e2074b5b532c174b853539976930eeff909d22e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:920
- C:\Users\Admin\coujaan.exe
  "C:\Users\Admin\coujaan.exe"
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3748

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\coujaan.exe

Filesize
76KB

MD5
1106f10759b78a05e81888db47cea599

SHA1
6825c062ab6b2f3089e0f620471fdac874b8c22a

SHA256
461138dd0883fa129ad77aad3982447e1425740c4ad5af120cf376852e1155ab

SHA512
a73e400b7026e8e4021a301480e21d0eb5f53705e48b941fc69feec5dd06252e4138091bbeb2ad856eecece516ae47245978f064145dfb8ba694199732c27aa0

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