f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa

Analysis

max time kernel
131s
max time network
157s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
04/12/2022, 05:59

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General

Target

f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
Size

144KB
MD5

761cd905a105ac82309b786901e0a019
SHA1

2db7b0a846968a4c29f61b20167c443819c2c2c8
SHA256

f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa
SHA512

9a543092e7549867aa489d3abd7cdb504bc56eb9b55dd5b444b81810d7c16e8df077ed3d72463132ffdf0bdec704f48d7ce8af171dbea58b8a05e7b1e051650d
SSDEEP

1536:qiUQf1OdalnaYJy8PNigFfaGZp78lbcuZ/+J0g:qiUmOEdvTNVfaGZp78lwuUWg

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1532	BCSSync.exe
1304	BCSSync.exe

Loads dropped DLL 2 IoCs

pid	Process
1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe

Unexpected DNS network traffic destination 4 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	46.28.107.10
Destination IP	46.28.107.10
Destination IP	46.28.107.10
Destination IP	46.28.107.10

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\8k2o44.com	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
File created	C:\Windows\SysWOW64\8k2o44.com.b	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1496 set thread context of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1532 set thread context of 1304	1532	BCSSync.exe	29

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe.b	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.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 1 IoCs

pid	Process
1304	BCSSync.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
1532	BCSSync.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1496 wrote to memory of 1296	1496	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	27
PID 1296 wrote to memory of 1532	1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	28
PID 1296 wrote to memory of 1532	1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	28
PID 1296 wrote to memory of 1532	1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	28
PID 1296 wrote to memory of 1532	1296	f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe	28
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1532 wrote to memory of 1304	1532	BCSSync.exe	29
PID 1304 wrote to memory of 520	1304	BCSSync.exe	30
PID 1304 wrote to memory of 520	1304	BCSSync.exe	30
PID 1304 wrote to memory of 520	1304	BCSSync.exe	30
PID 1304 wrote to memory of 520	1304	BCSSync.exe	30

C:\Users\Admin\AppData\Local\Temp\f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
"C:\Users\Admin\AppData\Local\Temp\f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Users\Admin\AppData\Local\Temp\f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
  "C:\Users\Admin\AppData\Local\Temp\f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe"
  2⤵
  - Loads dropped DLL
  - Drops file in System32 directory
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe
    "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe" DEL:C:\Users\Admin\AppData\Local\Temp\f02a398bdbcaa0339158daf18d7104006fb25090fadf3d56f387a85723f902aa.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1532
  - - C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe
      "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of WriteProcessMemory
      PID:1304
    - - C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe
        
        "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync .exe" "C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe"
        5⤵
        
        PID:520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

Filesize
144KB

MD5
e7fc0103683f2b1630f7f4845df742d2

SHA1
bf98e142407710ab19272cbc9824bbab94df06f3

SHA256
15f6fcfd1937b4f095d017cf8e065cbb395ab3c68fa04325a14f1d4ce5562323

SHA512
7df0586ca17b5e9318051299f5ca35a5ad24f205a765dadf26c35e13fbee792d0b054038a0734da15b258268d09b444e92f9440caa561aa89add3ac30d88f782

Download Submit
C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

Filesize
144KB

MD5
e7fc0103683f2b1630f7f4845df742d2

SHA1
bf98e142407710ab19272cbc9824bbab94df06f3

SHA256
15f6fcfd1937b4f095d017cf8e065cbb395ab3c68fa04325a14f1d4ce5562323

SHA512
7df0586ca17b5e9318051299f5ca35a5ad24f205a765dadf26c35e13fbee792d0b054038a0734da15b258268d09b444e92f9440caa561aa89add3ac30d88f782

Download Submit
C:\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

Filesize
144KB

MD5
e7fc0103683f2b1630f7f4845df742d2

SHA1
bf98e142407710ab19272cbc9824bbab94df06f3

SHA256
15f6fcfd1937b4f095d017cf8e065cbb395ab3c68fa04325a14f1d4ce5562323

SHA512
7df0586ca17b5e9318051299f5ca35a5ad24f205a765dadf26c35e13fbee792d0b054038a0734da15b258268d09b444e92f9440caa561aa89add3ac30d88f782

Download Submit
\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

Filesize
144KB

MD5
e7fc0103683f2b1630f7f4845df742d2

SHA1
bf98e142407710ab19272cbc9824bbab94df06f3

SHA256
15f6fcfd1937b4f095d017cf8e065cbb395ab3c68fa04325a14f1d4ce5562323

SHA512
7df0586ca17b5e9318051299f5ca35a5ad24f205a765dadf26c35e13fbee792d0b054038a0734da15b258268d09b444e92f9440caa561aa89add3ac30d88f782

Download Submit
\Program Files (x86)\Microsoft Office\Office14\BCSSync.exe

Filesize
144KB

MD5
e7fc0103683f2b1630f7f4845df742d2

SHA1
bf98e142407710ab19272cbc9824bbab94df06f3

SHA256
15f6fcfd1937b4f095d017cf8e065cbb395ab3c68fa04325a14f1d4ce5562323

SHA512
7df0586ca17b5e9318051299f5ca35a5ad24f205a765dadf26c35e13fbee792d0b054038a0734da15b258268d09b444e92f9440caa561aa89add3ac30d88f782

Download Submit
memory/1296-56-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1296-60-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1296-59-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/1296-74-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1296-78-0x0000000074751000-0x0000000074753000-memory.dmp

Filesize
8KB

Download
memory/1296-79-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1304-77-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download