Analysis Overview
SHA256
f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01
Threat Level: Known bad
The file f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01 was found to be: Known bad.
Malicious Activity Summary
Detected Djvu ransomware
Djvu Ransomware
Modifies file permissions
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
System Location Discovery: System Language Discovery
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-25 22:53
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-07-25 22:53
Reported
2024-07-25 22:59
Platform
win7-20240704-en
Max time kernel
298s
Max time network
246s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1\\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2552 set thread context of 2712 | N/A | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe |
| PID 2752 set thread context of 2928 | N/A | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\icacls.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 172.217.169.3:80 | c.pki.goog | tcp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| AR | 190.224.203.37:80 | cajgtus.com | tcp |
| AR | 190.224.203.37:80 | cajgtus.com | tcp |
| AR | 190.224.203.37:80 | cajgtus.com | tcp |
| AR | 190.224.203.37:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | crl.microsoft.com | udp |
| GB | 2.18.190.71:80 | crl.microsoft.com | tcp |
Files
memory/2552-0-0x0000000000230000-0x00000000002C1000-memory.dmp
memory/2712-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2552-5-0x0000000003D40000-0x0000000003E5B000-memory.dmp
memory/2712-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2552-1-0x0000000000230000-0x00000000002C1000-memory.dmp
memory/2712-7-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2712-8-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2552-9-0x0000000000230000-0x00000000002C1000-memory.dmp
C:\Users\Admin\AppData\Local\b36f53cc-f14b-4a91-8a32-fa2cdeafa5e1\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
| MD5 | 4b53133b0e11c01f58a1ad4eb69fa0ce |
| SHA1 | 00a3b78374a127bcb3c944f4a65ff0fe5ba04d37 |
| SHA256 | f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01 |
| SHA512 | 95d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1 |
memory/2712-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2752-30-0x0000000000280000-0x0000000000311000-memory.dmp
memory/2928-33-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 139d8702db8d2fb180c4bedf1a17ab4c |
| SHA1 | 22cf299152feea8024d4eb6bde05b960b911bcb9 |
| SHA256 | c001f28c543a4dac7a1fc56edd19a5b8f117d88c5ce1b6059308f916f14baf9f |
| SHA512 | b77f004f99fbf1976dc2b440c637070184d74fb2315a926a51fe5fbff4768397306c145a91fe5918fd51a03cb38471852dd398aeff40505f9e8868fb3aafaf9c |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 7fb5fa1534dcf77f2125b2403b30a0ee |
| SHA1 | 365d96812a69ac0a4611ea4b70a3f306576cc3ea |
| SHA256 | 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f |
| SHA512 | a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 76d650bc1058ee2e24c19f662b76f57b |
| SHA1 | 6ec42bd6162db2bfaf755c310bfebffac7c6b4bb |
| SHA256 | 9300b0b8017279e3866c144618331064be49046e7568fafe78ac02f3ff59724d |
| SHA512 | d96fd121fe62e600fa7185fc27e117aecb811b8559d8781fe0fc148fc6ff39b09578f8a0e2c891552ded94fe434c5a8daea15d053479d6ace5febb3f5d09e17e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 971c514f84bba0785f80aa1c23edfd79 |
| SHA1 | 732acea710a87530c6b08ecdf32a110d254a54c8 |
| SHA256 | f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895 |
| SHA512 | 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58 |
C:\Users\Admin\AppData\Local\Temp\Cab90CB.tmp
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
memory/2928-48-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-49-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-47-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-50-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-52-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-55-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2928-56-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-25 22:53
Reported
2024-07-25 22:58
Platform
win10-20240404-en
Max time kernel
296s
Max time network
299s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
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| N/A | N/A | N/A | N/A |
Djvu Ransomware
Modifies file permissions
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\icacls.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3699363923-1875576828-3287151903-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\f70c24b5-0f68-475a-b6f8-c66e456ec08b\\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
| N/A | api.2ip.ua | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 588 set thread context of 2056 | N/A | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe |
| PID 2944 set thread context of 644 | N/A | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\icacls.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\f70c24b5-0f68-475a-b6f8-c66e456ec08b" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
"C:\Users\Admin\AppData\Local\Temp\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 172.217.169.3:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.169.217.172.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | cajgtus.com | udp |
| KW | 78.89.199.216:80 | cajgtus.com | tcp |
| US | 8.8.8.8:53 | 216.199.89.78.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.173.189.20.in-addr.arpa | udp |
Files
memory/588-1-0x0000000004130000-0x00000000041CB000-memory.dmp
memory/588-2-0x0000000004280000-0x000000000439B000-memory.dmp
memory/2056-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2056-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2056-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2056-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\f70c24b5-0f68-475a-b6f8-c66e456ec08b\f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01.exe
| MD5 | 4b53133b0e11c01f58a1ad4eb69fa0ce |
| SHA1 | 00a3b78374a127bcb3c944f4a65ff0fe5ba04d37 |
| SHA256 | f874d2ec768aac73111ccc280352a8769b03d1789327b0b3e9674c55e0de1c01 |
| SHA512 | 95d6245010d4784c2bc8e06965d097997f5c70af6f57e8a5c89845920641db493ca2a659ff3b93bcfac2d927434d4589b37de1364d919947a5c687f3f89fcab1 |
memory/2056-21-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 7fb5fa1534dcf77f2125b2403b30a0ee |
| SHA1 | 365d96812a69ac0a4611ea4b70a3f306576cc3ea |
| SHA256 | 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f |
| SHA512 | a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
| MD5 | 492e6b9ce669abcee99a2890ea861df9 |
| SHA1 | 99348f5e97cb1158a1258e96d01964efad6b95ab |
| SHA256 | 16e24a5f75fce3d04ac961bfc1f62fcf490e24ca78f550ca54aa259ccdaae0fa |
| SHA512 | d7babbf89f5f5648fc471848d68fce4e72e82e12ae8df3a10fe49e541c37d3fc4710ad41998f1bd146552823ad783431ebb5ed165def619461d94d75a337d7b6 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 971c514f84bba0785f80aa1c23edfd79 |
| SHA1 | 732acea710a87530c6b08ecdf32a110d254a54c8 |
| SHA256 | f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895 |
| SHA512 | 43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
| MD5 | 591c0b6b740633dd6b9470e887b9b1f6 |
| SHA1 | 93780fbf1bd18c27433e4077d86beb581b710160 |
| SHA256 | 8b001854c3648927bdfa66dd4529ff42f3788a1c3b5e03b62f65b610ab435e20 |
| SHA512 | 9a65450939785fbba8ee06bdc91f8d759a447a61a1e7fe930c210483c813c2de2831a0cbc05916e552d89f5732c524a70e2abe49ea40acd44179bb76a835c165 |
memory/644-32-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-33-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-40-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/644-41-0x0000000000400000-0x0000000000537000-memory.dmp