1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61

General

Target

1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe
Size

396KB
MD5

a0212d26e0543a9c8df3f96fa8979cd0
SHA1

cf5e13d23c38b4dc6550740df1ccf8d5acd51a45
SHA256

1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61
SHA512

91c37a577f7be536928f0ca87a140f11a1c5f86e08464baca2d4a5fcc660ca6df1375f08dc262cb6fc782af2be311813319ce00064dd09a5074aa1562f398672
SSDEEP

6144:sBHdoqq3vQZ7JUJjtU8oFssaq5lejZq3vQZ7JU5jtU8oFssaq5le:sBXq3oZlU9tU8oJ7oZq3oZlUttU8oJb

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2044	LocaljknxaCcFpZ.exe
1816	yahoo.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
824	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8ef6e5fbcf93c20a9c240921a52d8776.exe	yahoo.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8ef6e5fbcf93c20a9c240921a52d8776.exe	yahoo.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	LocaljknxaCcFpZ.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\8ef6e5fbcf93c20a9c240921a52d8776 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\yahoo.exe\" .."	yahoo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\8ef6e5fbcf93c20a9c240921a52d8776 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\yahoo.exe\" .."	yahoo.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1816	yahoo.exe
1816	yahoo.exe
1816	yahoo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1816	yahoo.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1584 wrote to memory of 2044	1584	1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe	28
PID 1584 wrote to memory of 2044	1584	1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe	28
PID 1584 wrote to memory of 2044	1584	1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe	28
PID 1584 wrote to memory of 2044	1584	1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe	28
PID 2044 wrote to memory of 1816	2044	LocaljknxaCcFpZ.exe	31
PID 2044 wrote to memory of 1816	2044	LocaljknxaCcFpZ.exe	31
PID 2044 wrote to memory of 1816	2044	LocaljknxaCcFpZ.exe	31
PID 2044 wrote to memory of 1816	2044	LocaljknxaCcFpZ.exe	31
PID 1816 wrote to memory of 824	1816	yahoo.exe	32
PID 1816 wrote to memory of 824	1816	yahoo.exe	32
PID 1816 wrote to memory of 824	1816	yahoo.exe	32
PID 1816 wrote to memory of 824	1816	yahoo.exe	32

C:\Users\Admin\AppData\Local\Temp\1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe
"C:\Users\Admin\AppData\Local\Temp\1046752e4622b92f479bace4a1c743e8caeaf63decca33a235067ece87825d61.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1584
- C:\Users\Admin\AppData\LocaljknxaCcFpZ.exe
  "C:\Users\Admin\AppData\LocaljknxaCcFpZ.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Users\Admin\AppData\Local\Temp\yahoo.exe
    "C:\Users\Admin\AppData\Local\Temp\yahoo.exe"
    3⤵
    - Executes dropped EXE
    - Drops startup file
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1816
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\yahoo.exe" "yahoo.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\yahoo.exe

Filesize
203KB

MD5
7e34af9f65e1c2fdb405a60d1742aecd

SHA1
87c96803f6d7051ff61741b2bbb06324b229c8f2

SHA256
5b32f26941a7a9da9e82a8490c79e53a91ba3b47b897d5188e5eeb41a0aaf7cd

SHA512
9e86127befe32dc5739ce6eac3d3698fa06bb21125c35d5c7c656a7316679f5896245b5312a3ee37b30efd7d9a162b05a0be23e7ace000bbcd1e6617cfb95c06

Download Submit
C:\Users\Admin\AppData\Local\Temp\yahoo.exe

Filesize
203KB

MD5
7e34af9f65e1c2fdb405a60d1742aecd

SHA1
87c96803f6d7051ff61741b2bbb06324b229c8f2

SHA256
5b32f26941a7a9da9e82a8490c79e53a91ba3b47b897d5188e5eeb41a0aaf7cd

SHA512
9e86127befe32dc5739ce6eac3d3698fa06bb21125c35d5c7c656a7316679f5896245b5312a3ee37b30efd7d9a162b05a0be23e7ace000bbcd1e6617cfb95c06

Download Submit
C:\Users\Admin\AppData\LocaljknxaCcFpZ.exe

Filesize
203KB

MD5
7e34af9f65e1c2fdb405a60d1742aecd

SHA1
87c96803f6d7051ff61741b2bbb06324b229c8f2

SHA256
5b32f26941a7a9da9e82a8490c79e53a91ba3b47b897d5188e5eeb41a0aaf7cd

SHA512
9e86127befe32dc5739ce6eac3d3698fa06bb21125c35d5c7c656a7316679f5896245b5312a3ee37b30efd7d9a162b05a0be23e7ace000bbcd1e6617cfb95c06

Download Submit
C:\Users\Admin\AppData\LocaljknxaCcFpZ.exe

Filesize
203KB

MD5
7e34af9f65e1c2fdb405a60d1742aecd

SHA1
87c96803f6d7051ff61741b2bbb06324b229c8f2

SHA256
5b32f26941a7a9da9e82a8490c79e53a91ba3b47b897d5188e5eeb41a0aaf7cd

SHA512
9e86127befe32dc5739ce6eac3d3698fa06bb21125c35d5c7c656a7316679f5896245b5312a3ee37b30efd7d9a162b05a0be23e7ace000bbcd1e6617cfb95c06

Download Submit
\Users\Admin\AppData\Local\Temp\yahoo.exe

Filesize
203KB

MD5
7e34af9f65e1c2fdb405a60d1742aecd

SHA1
87c96803f6d7051ff61741b2bbb06324b229c8f2

SHA256
5b32f26941a7a9da9e82a8490c79e53a91ba3b47b897d5188e5eeb41a0aaf7cd

SHA512
9e86127befe32dc5739ce6eac3d3698fa06bb21125c35d5c7c656a7316679f5896245b5312a3ee37b30efd7d9a162b05a0be23e7ace000bbcd1e6617cfb95c06

Download Submit
memory/1584-60-0x000000001AD40000-0x000000001AD50000-memory.dmp

Filesize
64KB

Download
memory/1584-54-0x000007FEF44C0000-0x000007FEF4EE3000-memory.dmp

Filesize
10.1MB

Download
memory/1584-55-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

Filesize
8KB

Download
memory/1816-69-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1816-71-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-59-0x0000000075241000-0x0000000075243000-memory.dmp

Filesize
8KB

Download
memory/2044-61-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/2044-68-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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