687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2

General

Target

687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe
Size

22KB
MD5

79b1f47c0dfd99f974d2920a381ad91f
SHA1

c440b90511dcbe337e04dd56ce582f8c7441e891
SHA256

687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2
SHA512

6b5796238b34e9245b78c58a92551372006138aab54ce224c06b4c2afae0172a984202b95c13298ffe89c2196aaaa859e7707b8c6c7615313a089f1791c7de06
SSDEEP

192:tbJVvBjraenIHX9+f1qulZjYpjorHq1oynIJguqv4E5rMdPqaDdDWLkqUN:tbTpjG7X9ehZjYp4K11p5rMhXh6UN

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

zcrjc.exe

pid process

1340 zcrjc.exe
Deletes itself 1 IoCs

Processes:

zcrjc.exe

pid process

1340 zcrjc.exe
Loads dropped DLL 1 IoCs

Processes:

687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe

pid process

600 687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1340	zcrjc.exe

pid	process
1340	zcrjc.exe

pid	process
600	687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

zcrjc.exe

description	ioc	process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 19000000010000001000000068cb42b035ea773e52ef50ecf50ec529030000000100000014000000d4de20d05e66fc53fe1a50882c78db2852cae47409000000010000000c000000300a06082b060105050703011d0000000100000010000000918ad43a9475f78bb5243de886d8103c140000000100000014000000e59d5930824758ccacfa085436867b3ab5044df053000000010000002400000030223020060a2b06010401b13e01640130123010060a2b0601040182373c0101030200c00b0000000100000034000000420061006c00740069006d006f007200650020004300790062006500720054007200750073007400200052006f006f00740000000f0000000100000014000000ce0e658aa3e847e467a147b3049191093d055e6f20000000010000007b030000308203773082025fa0030201020204020000b9300d06092a864886f70d0101050500305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f74301e170d3030303531323138343630305a170d3235303531323233353930305a305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f7430820122300d06092a864886f70d01010105000382010f003082010a0282010100a304bb22ab983d57e826729ab579d429e2e1e89580b1b0e35b8e2b299a64dfa15dedb009056ddb282ece62a262feb488da12eb38eb219dc0412b01527b8877d31c8fc7bab988b56a09e773e81140a7d1ccca628d2de58f0ba650d2a850c328eaf5ab25878a9a961ca967b83f0cd5f7f952132fc21bd57070f08fc012ca06cb9ae1d9ca337a77d6f8ecb9f16844424813d2c0c2a4ae5e60feb6a605fcb4dd075902d459189863f5a563e0900c7d5db2067af385eaebd403ae5e843e5fff15ed69bcf939367275cf77524df3c9902cb93de5c923533f1f2498215c079929bdc63aece76e863a6b97746333bd681831f0788d76bffc9e8e5d2a86a74d90dc271a390203010001a3453043301d0603551d0e04160414e59d5930824758ccacfa085436867b3ab5044df030120603551d130101ff040830060101ff020103300e0603551d0f0101ff040403020106300d06092a864886f70d01010505000382010100850c5d8ee46f51684205a0ddbb4f27258403bdf764fd2dd730e3a41017ebda2929b6793f76f6191323b8100af958a4d46170bd04616a128a17d50abdc5bc307cd6e90c258d86404feccca37e38c637114feddd68318e4cd2b30174eebe755e07481a7f70ff165c84c07985b805fd7fbe6511a30fc002b4f852373904d5a9317a18bfa02af41299f7a34582e33c5ef59d9eb5c89e7c2ec8a49e4e08144b6dfd706d6b1a63bd64e61fb7cef0f29f2ebb1bb7f250887392c2e2e3168d9a3202ab8e18dde91011ee7e35ab90af3e30947ad0333da7650ff5fc8e9e62cf47442c015dbb1db532d247d2382ed0fe81dc326a1eb5ee3cd5fce7811d19c32442ea6339a9	zcrjc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	zcrjc.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 0f0000000100000014000000ce0e658aa3e847e467a147b3049191093d055e6f0b0000000100000034000000420061006c00740069006d006f007200650020004300790062006500720054007200750073007400200052006f006f007400000053000000010000002400000030223020060a2b06010401b13e01640130123010060a2b0601040182373c0101030200c0140000000100000014000000e59d5930824758ccacfa085436867b3ab5044df01d0000000100000010000000918ad43a9475f78bb5243de886d8103c09000000010000000c000000300a06082b06010505070301030000000100000014000000d4de20d05e66fc53fe1a50882c78db2852cae47420000000010000007b030000308203773082025fa0030201020204020000b9300d06092a864886f70d0101050500305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f74301e170d3030303531323138343630305a170d3235303531323233353930305a305a310b300906035504061302494531123010060355040a130942616c74696d6f726531133011060355040b130a43796265725472757374312230200603550403131942616c74696d6f7265204379626572547275737420526f6f7430820122300d06092a864886f70d01010105000382010f003082010a0282010100a304bb22ab983d57e826729ab579d429e2e1e89580b1b0e35b8e2b299a64dfa15dedb009056ddb282ece62a262feb488da12eb38eb219dc0412b01527b8877d31c8fc7bab988b56a09e773e81140a7d1ccca628d2de58f0ba650d2a850c328eaf5ab25878a9a961ca967b83f0cd5f7f952132fc21bd57070f08fc012ca06cb9ae1d9ca337a77d6f8ecb9f16844424813d2c0c2a4ae5e60feb6a605fcb4dd075902d459189863f5a563e0900c7d5db2067af385eaebd403ae5e843e5fff15ed69bcf939367275cf77524df3c9902cb93de5c923533f1f2498215c079929bdc63aece76e863a6b97746333bd681831f0788d76bffc9e8e5d2a86a74d90dc271a390203010001a3453043301d0603551d0e04160414e59d5930824758ccacfa085436867b3ab5044df030120603551d130101ff040830060101ff020103300e0603551d0f0101ff040403020106300d06092a864886f70d01010505000382010100850c5d8ee46f51684205a0ddbb4f27258403bdf764fd2dd730e3a41017ebda2929b6793f76f6191323b8100af958a4d46170bd04616a128a17d50abdc5bc307cd6e90c258d86404feccca37e38c637114feddd68318e4cd2b30174eebe755e07481a7f70ff165c84c07985b805fd7fbe6511a30fc002b4f852373904d5a9317a18bfa02af41299f7a34582e33c5ef59d9eb5c89e7c2ec8a49e4e08144b6dfd706d6b1a63bd64e61fb7cef0f29f2ebb1bb7f250887392c2e2e3168d9a3202ab8e18dde91011ee7e35ab90af3e30947ad0333da7650ff5fc8e9e62cf47442c015dbb1db532d247d2382ed0fe81dc326a1eb5ee3cd5fce7811d19c32442ea6339a9	zcrjc.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe

description	pid	process	target process
PID 600 wrote to memory of 1340	600	687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe	zcrjc.exe
PID 600 wrote to memory of 1340	600	687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe	zcrjc.exe
PID 600 wrote to memory of 1340	600	687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe	zcrjc.exe
PID 600 wrote to memory of 1340	600	687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe	zcrjc.exe

C:\Users\Admin\AppData\Local\Temp\687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe
"C:\Users\Admin\AppData\Local\Temp\687c7d8030b9f15bd2ef857116ef8c0c6fe83aa998ff32dab406beb0d4e759c2.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:600

C:\Users\Admin\AppData\Local\Temp\zcrjc.exe
"C:\Users\Admin\AppData\Local\Temp\zcrjc.exe"
2⤵
- Executes dropped EXE
- Deletes itself
- Modifies system certificate store
PID:1340

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\zcrjc.exe
Filesize
22KB

MD5
a349a6e6a2baac61c37c87e79c737289

SHA1
dab7142f1cba7c703db74d38ec971e18add95d2a

SHA256
d99ba6343495c6bb81f49000e316540b9081111ce00d673982f96723b9e028b3

SHA512
82a98e41bcb76e1e0005db44fa9185bcfde292bad20cd472c76b4dbe7fc125e7b4127247aa0f3079d7cb551c1b45fd323a537503961189beabebacc011f5355d

Download Submit
C:\Users\Admin\AppData\Local\Temp\zcrjc.exe
Filesize
22KB

MD5
a349a6e6a2baac61c37c87e79c737289

SHA1
dab7142f1cba7c703db74d38ec971e18add95d2a

SHA256
d99ba6343495c6bb81f49000e316540b9081111ce00d673982f96723b9e028b3

SHA512
82a98e41bcb76e1e0005db44fa9185bcfde292bad20cd472c76b4dbe7fc125e7b4127247aa0f3079d7cb551c1b45fd323a537503961189beabebacc011f5355d

Download Submit
\Users\Admin\AppData\Local\Temp\zcrjc.exe
Filesize
22KB

MD5
a349a6e6a2baac61c37c87e79c737289

SHA1
dab7142f1cba7c703db74d38ec971e18add95d2a

SHA256
d99ba6343495c6bb81f49000e316540b9081111ce00d673982f96723b9e028b3

SHA512
82a98e41bcb76e1e0005db44fa9185bcfde292bad20cd472c76b4dbe7fc125e7b4127247aa0f3079d7cb551c1b45fd323a537503961189beabebacc011f5355d

Download Submit
memory/600-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

Filesize
8KB

Download
memory/600-55-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/1340-57-0x0000000000000000-mapping.dmp

Download
memory/1340-61-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download

Analysis

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