fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72

Analysis

max time kernel
111s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2024 01:54

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General

Target

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe
Size

58KB
MD5

8a0af78f66ee4b22dfe44b9f65c7ab39
SHA1

cf4e02d97e2a9b5d9f2dd00b5b98e4b0bbd93ad8
SHA256

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72
SHA512

7d6b4ee3a2b4a00d47505fdb9a6a1153024db72a9797f7985de5c6a452e73b060e3903011c0262d34466b026f5200444d1e2cf677896a36a06453af340d6419e
SSDEEP

1536:hvQoLHjw2iWPKMvw71/RLyXwvvvZeee5Lttttx:hv5Ls27BIJ/RLyXweeeRttttx

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

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:

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

Executes dropped EXE 1 IoCs

Processes:

yyghost.exe

pid process

1608 yyghost.exe
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

pid	process
1608	yyghost.exe

Drops file in Windows directory 2 IoCs

Processes:

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

description	ioc	process
File created	C:\Windows\Debug\yyghost.exe	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe
File opened for modification	C:\Windows\Debug\yyghost.exe	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.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 3 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

Processes:

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exeyyghost.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yyghost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

yyghost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	yyghost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	yyghost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

description pid process

Token: SeIncBasePriorityPrivilege 4724 fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	4724	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe

description	pid	process	target process
PID 4724 wrote to memory of 1452	4724	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe	cmd.exe
PID 4724 wrote to memory of 1452	4724	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe	cmd.exe
PID 4724 wrote to memory of 1452	4724	fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe
"C:\Users\Admin\AppData\Local\Temp\fd3fae3b67cfb182d823fbcb923c66827968ebae5dcfe8247861b78da5a06c72.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\FD3FAE~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1452

C:\Windows\Debug\yyghost.exe
C:\Windows\Debug\yyghost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
PID:1608

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

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:\Windows\Debug\yyghost.exe

Filesize
58KB

MD5
8d2d314f0337681c0550c64e54018792

SHA1
9e57579d97b62b65c802e6b1e088cf0190be142e

SHA256
5017a6a85bec898c9a1b408c08c23340196eb2b2a35b322b435dab9bee2716aa

SHA512
a8d304ae9b1977d35ab6cf1a17e6addda2adcc7bb1aecdef2a911395de6d8b74985817cf7462bcafcc220435278e05d773eaffc4d080e08b58ae63e64a0ad871

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