453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d

Analysis

max time kernel
95s
max time network
121s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27-11-2022 16:11

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General

Target

453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe
Size

27KB
MD5

df9d565d73b0056164e8da08add34b13
SHA1

5dd2ba3a2439c280ddd5f801f324d51514769c1f
SHA256

453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d
SHA512

b7273576f2b51a2f236fdb4323a910bcf39c1d6c36e1632df7813436c5b229911ddd574425663a47318dcb2eb64aa2aa71772a0e597234c6a23d823982f5ad1a
SSDEEP

768:j3Fw6kjiBCwd1+L0mNvjaRziDG/jDQjjmWTe+Hc94stg:r8mJP+L0mNvjaRziDG/jDQjjmW9Hc9D+

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Cythosia.exe

pid process

848 Cythosia.exe

pid	process
848	Cythosia.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exeCythosia.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cythosia = "C:\\Users\\Admin\\AppData\\Roaming\\App Data\\Cythosia.exe"	453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Cythosia = "C:\\Users\\Admin\\AppData\\Roaming\\App Data\\Cythosia.exe"	Cythosia.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exeCythosia.exe

description	pid	process
Token: SeDebugPrivilege	1736	453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe
Token: SeDebugPrivilege	848	Cythosia.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe

description	pid	process	target process
PID 1736 wrote to memory of 848	1736	453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe	Cythosia.exe
PID 1736 wrote to memory of 848	1736	453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe	Cythosia.exe
PID 1736 wrote to memory of 848	1736	453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe	Cythosia.exe

C:\Users\Admin\AppData\Local\Temp\453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe
"C:\Users\Admin\AppData\Local\Temp\453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Roaming\App Data\Cythosia.exe
  "C:\Users\Admin\AppData\Roaming\App Data\Cythosia.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  PID:848

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\App Data\Cythosia.exe

Filesize
27KB

MD5
df9d565d73b0056164e8da08add34b13

SHA1
5dd2ba3a2439c280ddd5f801f324d51514769c1f

SHA256
453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d

SHA512
b7273576f2b51a2f236fdb4323a910bcf39c1d6c36e1632df7813436c5b229911ddd574425663a47318dcb2eb64aa2aa71772a0e597234c6a23d823982f5ad1a

Download Submit
C:\Users\Admin\AppData\Roaming\App Data\Cythosia.exe

Filesize
27KB

MD5
df9d565d73b0056164e8da08add34b13

SHA1
5dd2ba3a2439c280ddd5f801f324d51514769c1f

SHA256
453e1cd458b611c1d6d22e983e77d46e32794968dd03d44ae66c0ab0bd9cb29d

SHA512
b7273576f2b51a2f236fdb4323a910bcf39c1d6c36e1632df7813436c5b229911ddd574425663a47318dcb2eb64aa2aa71772a0e597234c6a23d823982f5ad1a

Download Submit
memory/848-56-0x0000000000000000-mapping.dmp

Download
memory/848-59-0x0000000000020000-0x000000000002E000-memory.dmp

Filesize
56KB

Download
memory/1736-54-0x0000000000DB0000-0x0000000000DBE000-memory.dmp

Filesize
56KB

Download
memory/1736-55-0x000007FEFC071000-0x000007FEFC073000-memory.dmp

Filesize
8KB

Download