f84850c07f50d03b693d8dce2285e3e264a1bd0a49861b600afcdf423b7718b1

General

Target

osn.exe
Size

426KB
MD5

7990a08facbe1c8c5a673aee28de308a
SHA1

940bf5f40d0dd3b47b732d66d9bfae33e01d5d0f
SHA256

5aabccffcd5fe39c601e91a3c84f24854ce3aacc07321c1a09054942ab7aaa41
SHA512

8598137aa03f6c5ef48b5d370e9ba0d51386660c9de00c9ec051710adae204e150b259a31adde2f1d64dc1bf94707d515629992dc62020a5db8fd1721450336d
SSDEEP

6144:yZDNxWGx7Dsgz5Z7aZgYvhzmi7UDXTKFtwIjH1VdRQ/vqkg1gEagdQH:zG7DZJaZgIhzmmUTKFTj1V7uikFg

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
964	google.exe
1904	google.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
696	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7787bd67a92b047a61177111148878bc.exe	google.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7787bd67a92b047a61177111148878bc.exe	google.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	osn.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\7787bd67a92b047a61177111148878bc = "\"C:\\ProgramData\\google.exe\" .."	google.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\7787bd67a92b047a61177111148878bc = "\"C:\\ProgramData\\google.exe\" .."	google.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1952 set thread context of 1724	1952	osn.exe	28
PID 964 set thread context of 1904	964	google.exe	30

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 1 IoCs

pid	Process
1904	google.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	osn.exe
Token: SeDebugPrivilege	964	google.exe
Token: SeDebugPrivilege	1904	google.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1952 wrote to memory of 1724	1952	osn.exe	28
PID 1724 wrote to memory of 964	1724	osn.exe	29
PID 1724 wrote to memory of 964	1724	osn.exe	29
PID 1724 wrote to memory of 964	1724	osn.exe	29
PID 1724 wrote to memory of 964	1724	osn.exe	29
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 964 wrote to memory of 1904	964	google.exe	30
PID 1904 wrote to memory of 696	1904	google.exe	31
PID 1904 wrote to memory of 696	1904	google.exe	31
PID 1904 wrote to memory of 696	1904	google.exe	31
PID 1904 wrote to memory of 696	1904	google.exe	31

C:\Users\Admin\AppData\Local\Temp\osn.exe
"C:\Users\Admin\AppData\Local\Temp\osn.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952
- C:\Users\Admin\AppData\Local\Temp\osn.exe
  C:\Users\Admin\AppData\Local\Temp\osn.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\ProgramData\google.exe
    "C:\ProgramData\google.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:964
  - - C:\ProgramData\google.exe
      C:\ProgramData\google.exe
      4⤵
      Executes dropped EXE
      Drops startup file
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1904
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh firewall add allowedprogram "C:\ProgramData\google.exe" "google.exe" ENABLE
        5⤵
        Modifies Windows Firewall
        
        PID:696

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:\ProgramData\google.exe

Filesize
426KB

MD5
7990a08facbe1c8c5a673aee28de308a

SHA1
940bf5f40d0dd3b47b732d66d9bfae33e01d5d0f

SHA256
5aabccffcd5fe39c601e91a3c84f24854ce3aacc07321c1a09054942ab7aaa41

SHA512
8598137aa03f6c5ef48b5d370e9ba0d51386660c9de00c9ec051710adae204e150b259a31adde2f1d64dc1bf94707d515629992dc62020a5db8fd1721450336d

Download Submit
C:\ProgramData\google.exe

Filesize
426KB

MD5
7990a08facbe1c8c5a673aee28de308a

SHA1
940bf5f40d0dd3b47b732d66d9bfae33e01d5d0f

SHA256
5aabccffcd5fe39c601e91a3c84f24854ce3aacc07321c1a09054942ab7aaa41

SHA512
8598137aa03f6c5ef48b5d370e9ba0d51386660c9de00c9ec051710adae204e150b259a31adde2f1d64dc1bf94707d515629992dc62020a5db8fd1721450336d

Download Submit
C:\ProgramData\google.exe

Filesize
426KB

MD5
7990a08facbe1c8c5a673aee28de308a

SHA1
940bf5f40d0dd3b47b732d66d9bfae33e01d5d0f

SHA256
5aabccffcd5fe39c601e91a3c84f24854ce3aacc07321c1a09054942ab7aaa41

SHA512
8598137aa03f6c5ef48b5d370e9ba0d51386660c9de00c9ec051710adae204e150b259a31adde2f1d64dc1bf94707d515629992dc62020a5db8fd1721450336d

Download Submit
\ProgramData\google.exe

Filesize
426KB

MD5
7990a08facbe1c8c5a673aee28de308a

SHA1
940bf5f40d0dd3b47b732d66d9bfae33e01d5d0f

SHA256
5aabccffcd5fe39c601e91a3c84f24854ce3aacc07321c1a09054942ab7aaa41

SHA512
8598137aa03f6c5ef48b5d370e9ba0d51386660c9de00c9ec051710adae204e150b259a31adde2f1d64dc1bf94707d515629992dc62020a5db8fd1721450336d

Download Submit
memory/964-74-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-59-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1724-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1724-69-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1724-56-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1904-80-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download
memory/1904-82-0x0000000074830000-0x0000000074DDB000-memory.dmp

Filesize
5.7MB

Download
memory/1952-63-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download
memory/1952-54-0x00000000762F1000-0x00000000762F3000-memory.dmp

Filesize
8KB

Download
memory/1952-55-0x0000000074DE0000-0x000000007538B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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