djvu | 2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

General

Target

03cea6f6022a3a08d1ea003091a3e502.exe
Size

762KB
MD5

03cea6f6022a3a08d1ea003091a3e502
SHA1

643e34573258d1511921c8d97a5b3c26d6c70b62
SHA256

2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2
SHA512

560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42
SSDEEP

12288:e2ZPFVL/YNfMNwpo4id34UcFg522Af3mhQIDBYHJD9wICzXXRXGoKU:e2tcMNqo3/c+52TvsQ0CjCdKU

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
ransomnote
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rsa_pubkey.plain

Signatures

Detected Djvu ransomware 14 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2000-2-0x0000000005990000-0x0000000005AAB000-memory.dmp	family_djvu
behavioral1/memory/2136-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2136-8-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2136-9-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2136-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-49-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-50-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-51-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-54-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-56-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-57-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2128-58-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu
Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

2716 icacls.exe

pid	process
2716	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8d3da4b3-5231-4d3f-8462-4769696db085\\03cea6f6022a3a08d1ea003091a3e502.exe\" --AutoStart"	03cea6f6022a3a08d1ea003091a3e502.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

9 api.2ip.ua
3 api.2ip.ua
4 api.2ip.ua

flow	ioc
9	api.2ip.ua
3	api.2ip.ua
4	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

description	pid	process	target process
PID 2000 set thread context of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 set thread context of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

pid	process
2136	03cea6f6022a3a08d1ea003091a3e502.exe
2136	03cea6f6022a3a08d1ea003091a3e502.exe
2128	03cea6f6022a3a08d1ea003091a3e502.exe
2128	03cea6f6022a3a08d1ea003091a3e502.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe03cea6f6022a3a08d1ea003091a3e502.exe

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2000

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\8d3da4b3-5231-4d3f-8462-4769696db085" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2716

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2928

C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe
"C:\Users\Admin\AppData\Local\Temp\03cea6f6022a3a08d1ea003091a3e502.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2128

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
b976722e6aa4d29d0c420c7b71ee206a

SHA1
fa154a81a9adcff6ae004eb5a020eeab7bf1e6a0

SHA256
fe8079d0a697efbc9cd448968ec09f9a24aa17646114be475c4864d04b57c808

SHA512
b73be5f9fa8747c50c8bc736a3608d2a0393ce49f11fe0cb39c894d4f87455d55bcd0dd100f81d0ac8830fa72a98fbb15914115716d783a422600e576ab672ff

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
410B

MD5
c30dfa5f1650746c9f0ff9f53be00a13

SHA1
d1ca240040780786eeff516527aa2b1ae16602aa

SHA256
eb66c802e51ba9a0dd01b2d9d4b84411dea0a406f42a0760c558523a91325589

SHA512
e49547b328d8902d1c886a5bde0ead854848114c12d14114a2b31574c4cc1e6226c7534e46fd13a5b66b9d556b366525c2049c196e2068e234da8a78ec600e42

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
Filesize
344B

MD5
66a8bcbc388f18f8dceb7821f4112d49

SHA1
404ab4183d0a17fe5585c3bda7e2a38c18b592dd

SHA256
0f66b7a881f23604024148b0884b5a3a8b80ac760d521fa536dfa373182078e6

SHA512
1be3394e2aeede036288abd72c5405d15b1d208feb9e5d6454ffc1770c68f88822df4c89262e8ab58eed1fac4ab31b294e0d2415587ce4fbd11ae4550a4f834d

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
70ac85ff2aa26b3bb372a90ae3bd0ba8

SHA1
6cebcccd1de8e13361827acdb75519d0de8bf9a1

SHA256
87247249f0df33fc35647c6cc57895ebb3f343fbaa163193980d3c8b876ff16a

SHA512
34d6ec1fd5a69c99429cac774d7149e25d17ed2d424d6aad85e1f837e271d96ffddaf23eeabcc6942725dc6499fb6c00b73aafbf68c9b42c2b9999c4844be1c5

Download Submit
C:\Users\Admin\AppData\Local\8d3da4b3-5231-4d3f-8462-4769696db085\03cea6f6022a3a08d1ea003091a3e502.exe
Filesize
762KB

MD5
03cea6f6022a3a08d1ea003091a3e502

SHA1
643e34573258d1511921c8d97a5b3c26d6c70b62

SHA256
2f48e39c1fa623b569c7580066026dc25e629fcd4a9cdb8a58d22e45c9eb99c2

SHA512
560ec4d84a74b9089d12a6e00b02acb8fa1364f75172a2fd0916c030350ff9fe32ea137a3fdd8df3648870c82935131fdee9de6d00066d97f9d073cf85648e42

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab4144.tmp
Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
memory/2000-0-0x00000000040B0000-0x0000000004142000-memory.dmp

Filesize
584KB

Download
memory/2000-1-0x00000000040B0000-0x0000000004142000-memory.dmp

Filesize
584KB

Download
memory/2000-2-0x0000000005990000-0x0000000005AAB000-memory.dmp

Filesize
1.1MB

Download
memory/2000-6-0x00000000040B0000-0x0000000004142000-memory.dmp

Filesize
584KB

Download
memory/2128-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-49-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-58-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-57-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-56-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-54-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-51-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2128-50-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2136-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2136-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2136-8-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2136-9-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2136-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2928-30-0x00000000002F0000-0x0000000000382000-memory.dmp

Filesize
584KB

Download
memory/2928-28-0x00000000002F0000-0x0000000000382000-memory.dmp

Filesize
584KB

Download

description	pid	process	target process
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2000 wrote to memory of 2136	2000	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2136 wrote to memory of 2716	2136	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2136 wrote to memory of 2716	2136	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2136 wrote to memory of 2716	2136	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2136 wrote to memory of 2716	2136	03cea6f6022a3a08d1ea003091a3e502.exe	icacls.exe
PID 2136 wrote to memory of 2928	2136	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2136 wrote to memory of 2928	2136	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2136 wrote to memory of 2928	2136	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2136 wrote to memory of 2928	2136	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe
PID 2928 wrote to memory of 2128	2928	03cea6f6022a3a08d1ea003091a3e502.exe	03cea6f6022a3a08d1ea003091a3e502.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads