Analysis
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max time kernel
303s -
max time network
369s -
platform
windows10-2004_x64 -
resource
win10v2004-20230221-en -
resource tags
arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system -
submitted
31/03/2023, 15:39
Static task
static1
Behavioral task
behavioral1
Sample
f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
Resource
win10v2004-20230221-en
General
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Target
f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
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Size
702KB
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MD5
e5a01ac0fdc56bedef4e05c92a6d0f18
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SHA1
59717771b834d04bf8b90112623b15774b69549d
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SHA256
f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c
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SHA512
d0ee6acff372030d7484af8445ad21613c4d42fee69c1dfc1d0fa9dcfea31fef2d7c757b46823f32f658d5eebb5c95c8015dc8a967b9a048413fbb493e2b4034
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SSDEEP
12288:xk1AVJcXNVKGEniSGDXk9AkdzvJDIsFH3JdXEB9qSBerPKXPeQ:42c9v4iSikfTDIIZd0B9qJPKXPf
Malware Config
Extracted
djvu
http://zexeq.com/test1/get.php
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extension
.jycx
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offline_id
MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1
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payload_url
http://uaery.top/dl/build2.exe
http://zexeq.com/files/1/build3.exe
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ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-fkW8qLaCVQ Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0674JOsie
Signatures
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Detected Djvu ransomware 7 IoCs
resource yara_rule behavioral1/memory/2496-134-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-135-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/324-136-0x0000000002740000-0x000000000285B000-memory.dmp family_djvu behavioral1/memory/2496-137-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-140-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-154-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2496-157-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe -
Modifies file permissions 1 TTPs 1 IoCs
pid Process 3912 icacls.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\89734b94-1474-48f1-b839-966ca176633e\\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe\" --AutoStart" f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 33 api.2ip.ua 34 api.2ip.ua -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 324 set thread context of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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description ioc Process Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 5c0000000100000004000000000800000f00000001000000140000003e8e6487f8fd27d322a269a71edaac5d57811286090000000100000054000000305206082b0601050507030206082b06010505070303060a2b0601040182370a030406082b0601050507030406082b0601050507030606082b0601050507030706082b0601050507030106082b0601050507030853000000010000004300000030413022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c0301b060567810c010330123010060a2b0601040182373c0101030200c0620000000100000020000000d7a7a0fb5d7e2731d771e9484ebcdef71d5f0c3e0a2948782bc83ee0ea699ef40b000000010000001c0000005300650063007400690067006f002000280041004100410029000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e3491900000001000000100000002aa1c05e2ae606f198c2c5e937c97aa2200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 324 wrote to memory of 2496 324 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 80 PID 2496 wrote to memory of 3912 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 82 PID 2496 wrote to memory of 3912 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 82 PID 2496 wrote to memory of 3912 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 82 PID 2496 wrote to memory of 1672 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 86 PID 2496 wrote to memory of 1672 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 86 PID 2496 wrote to memory of 1672 2496 f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:324 -
C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2496 -
C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\89734b94-1474-48f1-b839-966ca176633e" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
PID:3912
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C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe"C:\Users\Admin\AppData\Local\Temp\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe" --Admin IsNotAutoStart IsNotTask3⤵PID:1672
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\89734b94-1474-48f1-b839-966ca176633e\f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c.exe
Filesize702KB
MD5e5a01ac0fdc56bedef4e05c92a6d0f18
SHA159717771b834d04bf8b90112623b15774b69549d
SHA256f17d58b44d1c50e97145890d241c8e5b08fc9d53318b8d98f5c83801ff0fca4c
SHA512d0ee6acff372030d7484af8445ad21613c4d42fee69c1dfc1d0fa9dcfea31fef2d7c757b46823f32f658d5eebb5c95c8015dc8a967b9a048413fbb493e2b4034