7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8

General

Target

7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe
Size

276KB
MD5

dd697a2f3f0b51dfd781e4906c934e30
SHA1

d764720649fbc0dcf0b02adaf9152a422d16813a
SHA256

7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8
SHA512

b005bdc616ac492f3acfdc04a8e7f6ce8112915dd0be6de10aec2b3f7058c813020a7065ccdbbfb781bf58329356bb381e3add5f6ad070ae417ded086dc5b0f4
SSDEEP

6144:0glCT+Xm65LAcG9VcD2nsA6go6Q2jGbx9p6fU1VzJhW2+SRMeVWFkBBa4uFkRWd9:0ICT+Xm65LAcG9VcD2nsA6go1XIdyXyD

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
904	Avs.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1372	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\099d47f91b012a29ae39cd40f201baf1.exe	Avs.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\099d47f91b012a29ae39cd40f201baf1.exe	Avs.exe

Loads dropped DLL 2 IoCs

pid	Process
896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe
896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\099d47f91b012a29ae39cd40f201baf1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Avs.exe\" .."	Avs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\099d47f91b012a29ae39cd40f201baf1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Avs.exe\" .."	Avs.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 16 IoCs

pid	Process
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe
904	Avs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	904	Avs.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 896 wrote to memory of 904	896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe	27
PID 896 wrote to memory of 904	896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe	27
PID 896 wrote to memory of 904	896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe	27
PID 896 wrote to memory of 904	896	7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe	27
PID 904 wrote to memory of 1372	904	Avs.exe	28
PID 904 wrote to memory of 1372	904	Avs.exe	28
PID 904 wrote to memory of 1372	904	Avs.exe	28
PID 904 wrote to memory of 1372	904	Avs.exe	28

C:\Users\Admin\AppData\Local\Temp\7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe
"C:\Users\Admin\AppData\Local\Temp\7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:896
- C:\Users\Admin\AppData\Local\Temp\Avs.exe
  "C:\Users\Admin\AppData\Local\Temp\Avs.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Avs.exe" "Avs.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1372

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\Avs.exe

Filesize
276KB

MD5
dd697a2f3f0b51dfd781e4906c934e30

SHA1
d764720649fbc0dcf0b02adaf9152a422d16813a

SHA256
7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8

SHA512
b005bdc616ac492f3acfdc04a8e7f6ce8112915dd0be6de10aec2b3f7058c813020a7065ccdbbfb781bf58329356bb381e3add5f6ad070ae417ded086dc5b0f4

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

Filesize
276KB

MD5
dd697a2f3f0b51dfd781e4906c934e30

SHA1
d764720649fbc0dcf0b02adaf9152a422d16813a

SHA256
7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8

SHA512
b005bdc616ac492f3acfdc04a8e7f6ce8112915dd0be6de10aec2b3f7058c813020a7065ccdbbfb781bf58329356bb381e3add5f6ad070ae417ded086dc5b0f4

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

Filesize
276KB

MD5
dd697a2f3f0b51dfd781e4906c934e30

SHA1
d764720649fbc0dcf0b02adaf9152a422d16813a

SHA256
7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8

SHA512
b005bdc616ac492f3acfdc04a8e7f6ce8112915dd0be6de10aec2b3f7058c813020a7065ccdbbfb781bf58329356bb381e3add5f6ad070ae417ded086dc5b0f4

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

Filesize
276KB

MD5
dd697a2f3f0b51dfd781e4906c934e30

SHA1
d764720649fbc0dcf0b02adaf9152a422d16813a

SHA256
7aeecaf18298cf2509c7003039be61458f933d9621ad14b184e9d58e1d9782d8

SHA512
b005bdc616ac492f3acfdc04a8e7f6ce8112915dd0be6de10aec2b3f7058c813020a7065ccdbbfb781bf58329356bb381e3add5f6ad070ae417ded086dc5b0f4

Download Submit
memory/896-62-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/896-55-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/896-54-0x0000000075B41000-0x0000000075B43000-memory.dmp

Filesize
8KB

Download
memory/904-64-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/904-66-0x0000000074AA0000-0x000000007504B000-memory.dmp

Filesize
5.7MB

Download
memory/904-67-0x00000000001F6000-0x0000000000207000-memory.dmp

Filesize
68KB

Download
memory/904-68-0x00000000001F6000-0x0000000000207000-memory.dmp

Filesize
68KB

Download

Analysis

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