bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651

General

Target

bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
Size

67KB
MD5

b7e5d97a60fec2db9a30bfb46dca307d
SHA1

c8d9578aca4a4bb528eb8280ae64df5c4b3408ce
SHA256

bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651
SHA512

ee98d4c74c1a6384f7b08692958fd6285834ba5693635106da407751af309263924217320138e84363b1747ededa33f97bdb4330824beb19661a20bf8e781f81
SSDEEP

1536:nn8YjGFzGwPwTFgc0GKf6xzpGG6vKRgau2Cnd3YehTuXAxUva:nnDjXwPwZFLxzp9u5nZYBAxCa

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
980	notepad.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Media Number Service\Parameters\ServiceDll = "C:\\Windows\\system32\\icmu.dll"	rundll32.exe

Loads dropped DLL 4 IoCs

pid	Process
2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
1680	rundll32.exe
676	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\icmu.dll	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\icmu.dll	rundll32.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\notepad.exe	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
File opened for modification	C:\Program Files (x86)\Common Files\notepad.exe	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
980	notepad.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2024 wrote to memory of 980	2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe	27
PID 2024 wrote to memory of 980	2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe	27
PID 2024 wrote to memory of 980	2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe	27
PID 2024 wrote to memory of 980	2024	bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe	27
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28
PID 980 wrote to memory of 1680	980	notepad.exe	28

C:\Users\Admin\AppData\Local\Temp\bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
"C:\Users\Admin\AppData\Local\Temp\bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2024
- C:\Program Files (x86)\Common Files\notepad.exe
  "C:\Program Files (x86)\Common Files\notepad.exe" C:\Users\Admin\AppData\Local\Temp\bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651.exe
  2⤵
  - Executes dropped EXE
  - Opens file in notepad (likely ransom note)
  - Suspicious use of WriteProcessMemory
  PID:980
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\B57.tmp" "8A'+ [=[SCMR'8[='U"
    3⤵
    - Sets DLL path for service in the registry
    - Loads dropped DLL
    - Drops file in System32 directory
    PID:1680

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Common Files\notepad.exe

Filesize
67KB

MD5
b7e5d97a60fec2db9a30bfb46dca307d

SHA1
c8d9578aca4a4bb528eb8280ae64df5c4b3408ce

SHA256
bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651

SHA512
ee98d4c74c1a6384f7b08692958fd6285834ba5693635106da407751af309263924217320138e84363b1747ededa33f97bdb4330824beb19661a20bf8e781f81

Download Submit
C:\Program Files (x86)\Common Files\notepad.exe

Filesize
67KB

MD5
b7e5d97a60fec2db9a30bfb46dca307d

SHA1
c8d9578aca4a4bb528eb8280ae64df5c4b3408ce

SHA256
bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651

SHA512
ee98d4c74c1a6384f7b08692958fd6285834ba5693635106da407751af309263924217320138e84363b1747ededa33f97bdb4330824beb19661a20bf8e781f81

Download Submit
C:\Users\Admin\AppData\Local\Temp\B57.tmp

Filesize
98KB

MD5
fa691bbacc13fc8e58960ef2d5dbe63e

SHA1
48f03e288c3891c9e30b3d936074ae4b235b5137

SHA256
e9426c7cca5c1726c72a10681b4c272d614788275237e4e90d19ba211932c86f

SHA512
d4d6650e39cbd9a699cc7adadd87b40da6e6d750a8576d2b083a244a94392561471f337b2ce492eb3764866f5fe7ded87e4da8cb1c1c6f8685d6a9020f272d34

Download Submit
\??\c:\windows\SysWOW64\icmu.dll

Filesize
98KB

MD5
fa691bbacc13fc8e58960ef2d5dbe63e

SHA1
48f03e288c3891c9e30b3d936074ae4b235b5137

SHA256
e9426c7cca5c1726c72a10681b4c272d614788275237e4e90d19ba211932c86f

SHA512
d4d6650e39cbd9a699cc7adadd87b40da6e6d750a8576d2b083a244a94392561471f337b2ce492eb3764866f5fe7ded87e4da8cb1c1c6f8685d6a9020f272d34

Download Submit
\Program Files (x86)\Common Files\notepad.exe

Filesize
67KB

MD5
b7e5d97a60fec2db9a30bfb46dca307d

SHA1
c8d9578aca4a4bb528eb8280ae64df5c4b3408ce

SHA256
bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651

SHA512
ee98d4c74c1a6384f7b08692958fd6285834ba5693635106da407751af309263924217320138e84363b1747ededa33f97bdb4330824beb19661a20bf8e781f81

Download Submit
\Program Files (x86)\Common Files\notepad.exe

Filesize
67KB

MD5
b7e5d97a60fec2db9a30bfb46dca307d

SHA1
c8d9578aca4a4bb528eb8280ae64df5c4b3408ce

SHA256
bdbb692efdb960e8adaae93b2c1c6af6732afab4b5cbdd4ba6c94a9d74129651

SHA512
ee98d4c74c1a6384f7b08692958fd6285834ba5693635106da407751af309263924217320138e84363b1747ededa33f97bdb4330824beb19661a20bf8e781f81

Download Submit
\Users\Admin\AppData\Local\Temp\B57.tmp

Filesize
98KB

MD5
fa691bbacc13fc8e58960ef2d5dbe63e

SHA1
48f03e288c3891c9e30b3d936074ae4b235b5137

SHA256
e9426c7cca5c1726c72a10681b4c272d614788275237e4e90d19ba211932c86f

SHA512
d4d6650e39cbd9a699cc7adadd87b40da6e6d750a8576d2b083a244a94392561471f337b2ce492eb3764866f5fe7ded87e4da8cb1c1c6f8685d6a9020f272d34

Download Submit
\Windows\SysWOW64\icmu.dll

Filesize
98KB

MD5
fa691bbacc13fc8e58960ef2d5dbe63e

SHA1
48f03e288c3891c9e30b3d936074ae4b235b5137

SHA256
e9426c7cca5c1726c72a10681b4c272d614788275237e4e90d19ba211932c86f

SHA512
d4d6650e39cbd9a699cc7adadd87b40da6e6d750a8576d2b083a244a94392561471f337b2ce492eb3764866f5fe7ded87e4da8cb1c1c6f8685d6a9020f272d34

Download Submit
memory/676-67-0x00000000001A0000-0x00000000001BE000-memory.dmp

Filesize
120KB

Download
memory/980-59-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1680-60-0x00000000766D1000-0x00000000766D3000-memory.dmp

Filesize
8KB

Download
memory/2024-63-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/2024-64-0x00000000001B0000-0x00000000001EB000-memory.dmp

Filesize
236KB

Download

Analysis

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