Analysis Overview
SHA256
b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9
Threat Level: Known bad
The file 04e42207db45792cae0f6d3fd83f0680N.exe was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Checks computer location settings
Modifies file permissions
Looks up external IP address via web service
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Program crash
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-24 23:38
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-24 23:38
Reported
2024-08-24 23:40
Platform
win7-20240729-en
Max time kernel
113s
Max time network
120s
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b74b4eea-47ca-4ced-8c3c-5193b773e4fa\\04e42207db45792cae0f6d3fd83f0680N.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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 2688 set thread context of 2364 | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe |
| PID 2656 set thread context of 2724 | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\b74b4eea-47ca-4ced-8c3c-5193b773e4fa" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | api.2ip.ua | udp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| FR | 216.58.214.163:80 | c.pki.goog | tcp |
| US | 104.21.65.24:443 | api.2ip.ua | tcp |
| US | 8.8.8.8:53 | asvb.top | udp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
| DE | 92.246.89.93:80 | asvb.top | tcp |
Files
memory/2688-0-0x0000000000250000-0x00000000002E1000-memory.dmp
memory/2688-1-0x0000000000250000-0x00000000002E1000-memory.dmp
memory/2688-2-0x00000000004E0000-0x00000000005FB000-memory.dmp
memory/2364-3-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2364-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2688-7-0x0000000000250000-0x00000000002E1000-memory.dmp
memory/2364-8-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2364-9-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\b74b4eea-47ca-4ced-8c3c-5193b773e4fa\04e42207db45792cae0f6d3fd83f0680N.exe
| MD5 | 04e42207db45792cae0f6d3fd83f0680 |
| SHA1 | cb17f3a1bb57541204afd27313b390e5ead5096c |
| SHA256 | b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9 |
| SHA512 | b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7 |
memory/2364-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2656-31-0x00000000002B0000-0x0000000000341000-memory.dmp
memory/2656-32-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/2724-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2724-39-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2656-37-0x0000000000400000-0x00000000004D9000-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 | 3c0e038e1f31e6942a3b8baa7c894843 |
| SHA1 | 062dbed32794214cfd7d25c5b12397d06001817c |
| SHA256 | 6db7e1d29cf4dced4b5a2ce0846ae0a25717205a61dd3afebd6458141ffed887 |
| SHA512 | f84a300ffc626acc7bbc1993facac7a0ba5b91156e684fc0dd36fd9cabf2c2399dc982521e7ebd2de6af642f503902232136c4deb946e5e03a18fe54b7d727fd |
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 | 960ef6a9311442525a0f0c1be0533b8b |
| SHA1 | 001fafae8cb6788d485f965717b98b16c35baf59 |
| SHA256 | 655230182abd281d3836acddf31e5cda2abe650b1b8f5a8bf9034da009513f73 |
| SHA512 | 8699eb6695f1bbaeabe3fe3c666496253b02da673f2850093b87a73a1ed51db74630fbb8044b75d6a1fb95def10d1b11987cdb6d182255095290e7bbeb477673 |
C:\Users\Admin\AppData\Local\Temp\Cab92ED.tmp
| MD5 | 49aebf8cbd62d92ac215b2923fb1b9f5 |
| SHA1 | 1723be06719828dda65ad804298d0431f6aff976 |
| SHA256 | b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f |
| SHA512 | bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
| MD5 | 1ebfed243f731affd3add1b83c5f049a |
| SHA1 | 8fc755fd69369576a0c951916e7bf8ccd7af49bd |
| SHA256 | a73c013af722cd1b96b1061eae317042e0cb8701f6e5c0a4b63c6b17d8d7c2b7 |
| SHA512 | b337341af67bd44c5ecdee9b85081d90d8d66055c72caff81bf373676a3b86ed1b291cb6a754d9faa591339575451ec3ec217bfc1415f6ae3d8e08aada5b30d4 |
memory/2724-54-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2724-55-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2724-56-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-24 23:38
Reported
2024-08-24 23:40
Platform
win10v2004-20240802-en
Max time kernel
102s
Max time network
105s
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 |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\75948559-0ffb-401d-9f4b-eb3d5bc23011\\04e42207db45792cae0f6d3fd83f0680N.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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 |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4716 set thread context of 3528 | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe |
| PID 4840 set thread context of 4964 | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe |
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\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.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\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\75948559-0ffb-401d-9f4b-eb3d5bc23011" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe
"C:\Users\Admin\AppData\Local\Temp\04e42207db45792cae0f6d3fd83f0680N.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4964 -ip 4964
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 568
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 72.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| 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 |
| FR | 216.58.214.163:80 | c.pki.goog | tcp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 163.214.58.216.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/4716-1-0x0000000002220000-0x00000000022BD000-memory.dmp
memory/4716-2-0x0000000002310000-0x000000000242B000-memory.dmp
memory/3528-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3528-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3528-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3528-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\75948559-0ffb-401d-9f4b-eb3d5bc23011\04e42207db45792cae0f6d3fd83f0680N.exe
| MD5 | 04e42207db45792cae0f6d3fd83f0680 |
| SHA1 | cb17f3a1bb57541204afd27313b390e5ead5096c |
| SHA256 | b377b7b8211e454117ba3d6cd6bb1ac84c0105c8647187cb5cf19ad50c9d26b9 |
| SHA512 | b81da4e8961bc8c25e6832db5c1227cb253e178e6c5a4db0725ed073639d944b8d8012865ace42b2781b3f09b082e44a8a19c2ee326a173acb8757caebacbbf7 |
memory/3528-19-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4840-21-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/4964-24-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4840-27-0x0000000000400000-0x00000000004D9000-memory.dmp
memory/4964-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4964-26-0x0000000000400000-0x0000000000537000-memory.dmp