d9a343f9c6b4709c56ca601770c98dcb8f61a10d5134abcacd9c19465d6d2746

Reason

Machine shutdown

General

Target
67.exe
Size 7.3MB
Sample261104-ydqnfaee77
SHA256 d9a343f9c6b4709c56ca601770c98dcb8f61a10d5134abcacd9c19465d6d2746
MD5 e0fee9cc019e5d4e29c1ea411be0def3
SHA1 c9d1f9fbb57fcab977e8c56bf04b768405f980de
SHA512 df34464b78a3d2b990a4ce6baf87503cd9ad4e3cab02f2c72c293743a3cd2ca4f2194497283761c746d60c19c5badcd8686691788a1399834f387c9e2f268a2f
SSDEEP 196608:/j0GEHaP6CwszeSPXRS9D4KstYTBpIlEefhgpXu:70GiaP64eSfog+BpI7fhg9
TLSH
T13C7633C4A0D310FEE98F6074A9C54A86DF72B40D1B68B9D753705AFA6D23AD0CE36712
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

bootkit defense_evasion persistence

Malware Config

Signatures

Loads dropped DLL 8 IoCs

pid	Process
3888	67.exe
3888	67.exe
3888	67.exe
3888	67.exe
3888	67.exe
3888	67.exe
3888	67.exe
3888	67.exe

Modifies boot configuration data using bcdedit 2 IoCs

pid	Process
5764	bcdedit.exe
1584	bcdedit.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	67.exe

Drops file in System32 directory 8 IoCs

description	ioc	Process
File created	C:\Windows\System32\config\SECURITY	67.exe
File created	C:\Windows\System32\config\DEFAULT	67.exe
File created	C:\Windows\System32\config\BBI	67.exe
File opened for modification	C:\Windows\System32\config\COMPONENTS	67.exe
File opened for modification	C:\Windows\System32\config\DRIVERS	67.exe
File created	C:\Windows\System32\config\SYSTEM	67.exe
File created	C:\Windows\System32\config\SOFTWARE	67.exe
File created	C:\Windows\System32\config\SAM	67.exe

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

System Information Discovery
T1082

Kills process with taskkill 6 IoCs

defense_evasion

pid	Process
2396	taskkill.exe
3016	taskkill.exe
5108	taskkill.exe
6060	taskkill.exe
1944	taskkill.exe
3480	taskkill.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 3888	3216	67.exe	85
PID 3888 wrote to memory of 5764	3888	67.exe	88
PID 3888 wrote to memory of 1584	3888	67.exe	90
PID 3888 wrote to memory of 2396	3888	67.exe	94
PID 3888 wrote to memory of 3016	3888	67.exe	97
PID 3888 wrote to memory of 5108	3888	67.exe	99
PID 3888 wrote to memory of 6060	3888	67.exe	101
PID 3888 wrote to memory of 1944	3888	67.exe	103
PID 3888 wrote to memory of 3480	3888	67.exe	105

C:\Users\Admin\AppData\Local\Temp\67.exe
"C:\Users\Admin\AppData\Local\Temp\67.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3216
- C:\Users\Admin\AppData\Local\Temp\67.exe
  C:\Users\Admin\AppData\Local\Temp\67.exe
  2⤵
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3888
- - C:\Windows\SYSTEM32\bcdedit.exe
    bcdedit /delete {current} /f
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:5764
- - C:\Windows\SYSTEM32\bcdedit.exe
    bcdedit /deletevalue {current} path /f
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1584
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM lsass.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2396
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM csrss.exe
    3⤵
    - Kills process with taskkill
    PID:3016
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM wininit.exe
    3⤵
    - Kills process with taskkill
    PID:5108
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM services.exe
    3⤵
    - Kills process with taskkill
    PID:6060
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM smss.exe
    3⤵
    - Kills process with taskkill
    PID:1944
- - C:\Windows\SYSTEM32\taskkill.exe
    taskkill /F /IM svchost.exe
    3⤵
    - Kills process with taskkill
    PID:3480

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

67.dll

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\67.dll
Size 6.8MB
SHA256 c84697436723361df1bd3cd927f51b1e3483a07af8c38d06a42a918f7eb84f05
MD5 3f93548b45ac839e9b40a3f79738e2fb
SHA1 e379f4ccaafac44620baab611750c4cc6dececc9
SHA512 6efec50706d2d14b89bfaaa0626d5884cb3a0ae5c06cfc106d5cf01a5046099ccd1c4fc88e1674da7d3aab7d5b46f560b7418d87c3593ea3a6a0ef21f5e08ffc
SSDEEP 98304:+7MCpy/EvVqj1DSE1E2uvXeCow0uT6y1/L5kt:+PIEvEj1Tt
TLSH
T14F664BA5BA905927FDE9F17831AB6A41E722C016A300D343F07C88BE7F8A764DD7564C
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

_bz2.pyd

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\_bz2.pyd
Size 86KB
SHA256 b938073c85cf6b9fe80556d7899ed1901e5e60b7adea2832442376239fb36b36
MD5 4cc74cced07914bd71dc9c4d2a3f127a
SHA1 77bda774eff7c8afc94892d2d5d63dd3c80f9ea4
SHA512 8f81a5287bc5f59eeb6bb6703c00495cf761816e6eb20b6cb401af20040464fffc5b5e95d21b49d6260debb9cfac4031cf87b5248c0077fa8edd0d390cc1910b
SSDEEP 1536:+/BvOKz7hvAKyRXzgwnZpfzyONpGX/4TjW8hSlUbrjvUIp3VJyPs5i9EfIY+8i:YBvLztGRXHyONpE/ajhwYXUIp3VGV
TLSH
T185838E87E3A463F6F6AB81B4D6810753E730BB460750A3AFB24482853F23F91AE59355
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

_ctypes.pyd

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\_ctypes.pyd
Size 139KB
SHA256 408cc4e7a22ffa418ca52f5e13fe9268a3c50a2bc9de02b0530b555ef591bc5a
MD5 659510afbc97992af071a0e2a75545ef
SHA1 ec7dba6821ccc0e6b9f851d39812e0de3627130b
SHA512 76a243fb96129041bccf92c2e231efdb53aba519bb26d919dc8b213e949fc0534448bf75400702c03850abb7cd24b1cbd37e0d0c76615a34248615aa44cde4d1
SSDEEP 3072:e/n1qQ8rqSN56EBZSQ4ED1O/IxswJQW2DfrFAIpGPMS:on1Jb86JE0/IxfSvF6
TLSH
T149D38F4B736840E6DA678138C6739E47EBB1F4511A1087CF02A4C99B1F637A2AE3F715
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

_lzma.pyd

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\_lzma.pyd
Size 157KB
SHA256 d2abf8db7fb0cf6285663b177991691a41b37e215c3d71fd087a98d8ec1bee63
MD5 e882005d06af06ef17b2338342b3f41e
SHA1 96dfac53ce267a9dd4d094bf5c5a665bc1cedfe9
SHA512 1e53c3501796da814f75ba8fc683720e968c5944fbeb2b9836c48a6656df0da120c075bc6c17ea788efa14be11f29172e80c64febe72e43502a02f707a5928dd
SSDEEP 3072:NJ66g4T5QW7JfyjEqkSkA51b4rznfJ9mNoVUIsbUIpI1yUx1:NUR4Tp4QPZ8N4nxYOIbHy
TLSH
T1FDF34C86B794F0E6F7328C78D2614F57E6F5781A0320929A01CC976D2B1FB759A2E313
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

_zstd.pyd

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\_zstd.pyd
Size 491KB
SHA256 33c6eca99470c3eb9d776b617c550ad41b002a668336f062a9ab7be677a7409a
MD5 fee9e34fa16e0ff378c281202a78d003
SHA1 d8681b1ecf3776d1f095ecb738210423bcfec287
SHA512 766fa08c57cb9e000237a5690e6bae8fbe2d2fb79fdf39f1a2f07ec668ee225df9675c9041d4b26410cbb4fb341693454dbcad722bcff3e78321412e0bfcf4ae
SSDEEP 6144:HoRvcMPHwrJqB2l1eUVcXmgqCBdBwzKhThruVxzeeVUL2LzMYZpzBYQFE95+SClu:IRFcemgqKP2eeVC2Lz9kQe95BCl9Vmxp
TLSH
T1C2B48D43F29943EDE53BC4B8CF465A13FBB1780B1214965B97A5CB993F07B309A69308
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

libffi-8.dll

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\libffi-8.dll
Size 38KB
SHA256 eff52743773eb550fcc6ce3efc37c85724502233b6b002a35496d828bd7b280a
MD5 0f8e4992ca92baaf54cc0b43aaccce21
SHA1 c7300975df267b1d6adcbac0ac93fd7b1ab49bd2
SHA512 6e1b223462dc124279bfca74fd2c66fe18b368ffbca540c84e82e0f5bcbea0e10cc243975574fa95ace437b9d8b03a446ed5ee0c9b1b094147cefaf704dfe978
SSDEEP 768:NiQfxQemQJNrPN+moyijAc5YiSyvkIPxWEqG:dfxIQvPkmoyijP7SytPxF
TLSH
T10B037C0B458418A4E657D53D97A64A2AC335B9240B60F2CB03D4C2BA3F6B7D6FB7C358
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

python314.dll

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\python314.dll
Size 6.5MB
SHA256 0f9857ffdfe010fe6b99328d58c2e3c7472ce75f336bf9c2ad9bd5bca3bce700
MD5 689a9724a63fb3b4f209c771c31d8a05
SHA1 2f88e8e16a9086e7974da71914fe4e89cd2eff9a
SHA512 0c96ec1b9ef6e56f29202681272c1062ea49867757c966ebdd050c513d4988cfab7cd6c31e1d94f438c1412b38f7b446af1629b2776c41d712051ab70054ac9f
SSDEEP 98304:xEQucV/qdDSSmJBA3ICXmRaJtv3vyHDMiE4rofB:xEQucVygSmJBA3InSiFG
TLSH
T19F668D26737515A4D8BB8035C9034647DBB1BC00AB30D34B49A4B6DA3F733635BAEB99
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

vcruntime140.dll

Path C:\Users\Admin\AppData\Local\Temp\onefile_3216_330713_Z18dBCAgOi0\vcruntime140.dll
Size 174KB
SHA256 d1f4225df2cd877dbf130d5668a021dce3f94118455ff5ec952061c30afc9ce7
MD5 07bc2f9c4c1b07e1cc013ca0079b31ac
SHA1 1098f2a834146995df7a91c78f72f210d8d2d12d
SHA512 8fd063d61d1c57bfae5ef105b1796c141ef2752dbad17ae79f974c417542c075bc8b4ac12163629a74e43004fd9cf170a76de9d11841b6e5c236f5b47fbbb09b
SSDEEP 3072:aoq3aLPst/GrhA4gBSnSQ37QwZyeBB0ecbavp7D:aofLPsmBnSQ3VyeBB0ecbaV
TLSH
T1C6048D51B2CC00B2E92B9674CCD69553D6B1B0057B30AADF47A846782F33FF2A63DA15
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads