Analysis Overview
SHA256
df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6
Threat Level: Known bad
The file df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6 was found to be: Known bad.
Malicious Activity Summary
Djvu Ransomware
Detected Djvu ransomware
Checks computer location settings
Modifies file permissions
Adds Run key to start application
Looks up external IP address via web service
Suspicious use of SetThreadContext
Enumerates physical storage devices
Program crash
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-16 00:10
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-16 00:10
Reported
2024-04-16 00:13
Platform
win10v2004-20240412-en
Max time kernel
125s
Max time network
156s
Command Line
Signatures
Detected Djvu ransomware
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
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Djvu Ransomware
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.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-1-5-21-1230272463-3683322193-511842230-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0a6b61a0-57a1-4dba-941f-deae0a9567e8\\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.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 1100 set thread context of 2344 | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe |
| PID 1128 set thread context of 2180 | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.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\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe"
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3688,i,14910875736531803530,4367035887674785793,262144 --variations-seed-version --mojo-platform-channel-handle=4376 /prefetch:8
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\0a6b61a0-57a1-4dba-941f-deae0a9567e8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe" --Admin IsNotAutoStart IsNotTask
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2180 -ip 2180
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2180 -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 | 241.154.82.20.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 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 220.139.67.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 21.114.53.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 25.14.97.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.143.182.52.in-addr.arpa | udp |
Files
memory/1100-1-0x00000000049C0000-0x0000000004A54000-memory.dmp
memory/1100-2-0x0000000004A60000-0x0000000004B7B000-memory.dmp
memory/2344-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2344-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2344-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2344-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\0a6b61a0-57a1-4dba-941f-deae0a9567e8\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
| MD5 | 23e17bc0ed5de8c26fc0d371d64c3b2c |
| SHA1 | a1f40ed9e90a8d55e3a5167b20191291de65b7f5 |
| SHA256 | df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6 |
| SHA512 | 018d9cfc145b98ff75d4cbc050733448bef77a0d3bbcbe94c3092fb9f5d1369ba8b4c3889cd6aae25a78adcb58ae131a53a695ede1c3cd2bf0593fe31f56e19b |
memory/2344-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2180-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/1128-20-0x00000000049E0000-0x0000000004A81000-memory.dmp
memory/2180-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/2180-25-0x0000000000400000-0x0000000000537000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-16 00:10
Reported
2024-04-16 00:13
Platform
win11-20240412-en
Max time kernel
149s
Max time network
151s
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-1-5-21-3263309122-2820180308-3568046652-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\caee1f84-39e6-4f6b-87df-f63c9fd36865\\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe\" --AutoStart" | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.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 4560 set thread context of 3416 | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe |
| PID 5052 set thread context of 4136 | N/A | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe | C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe"
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe"
C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\caee1f84-39e6-4f6b-87df-f63c9fd36865" /deny *S-1-1-0:(OI)(CI)(DE,DC)
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe" --Admin IsNotAutoStart IsNotTask
C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
"C:\Users\Admin\AppData\Local\Temp\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.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 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 3.180.250.142.in-addr.arpa | udp |
| US | 172.67.139.220:443 | api.2ip.ua | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
| KR | 211.119.84.112:80 | sdfjhuz.com | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
| CO | 190.156.239.49:80 | sajdfue.com | tcp |
Files
memory/4560-1-0x0000000004C00000-0x0000000004C9E000-memory.dmp
memory/4560-2-0x0000000004CA0000-0x0000000004DBB000-memory.dmp
memory/3416-3-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-4-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-5-0x0000000000400000-0x0000000000537000-memory.dmp
memory/3416-6-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\Local\caee1f84-39e6-4f6b-87df-f63c9fd36865\df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6.exe
| MD5 | 23e17bc0ed5de8c26fc0d371d64c3b2c |
| SHA1 | a1f40ed9e90a8d55e3a5167b20191291de65b7f5 |
| SHA256 | df7d6129ceb726b6e01762404f768aa2a4bca2366b7e32d93c1a6ef56d4bd5b6 |
| SHA512 | 018d9cfc145b98ff75d4cbc050733448bef77a0d3bbcbe94c3092fb9f5d1369ba8b4c3889cd6aae25a78adcb58ae131a53a695ede1c3cd2bf0593fe31f56e19b |
memory/3416-17-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-22-0x0000000000400000-0x0000000000537000-memory.dmp
memory/5052-21-0x0000000004AF0000-0x0000000004B8D000-memory.dmp
memory/4136-23-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-24-0x0000000000400000-0x0000000000537000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | a796999c503d181cf67725ed32be3bfe |
| SHA1 | 61bed07e1ca6dd7325b65653307671f95cd943bc |
| SHA256 | 54a3267f8825a4819df16f5448a9829081f9030088a02fa981222b43ec0fb392 |
| SHA512 | 5856964f0d0b6624577ce69751eab308994ef106eaf1de54fa4544caf362f4fbb94f99ceb4f9865746d01a9edce3dcdd685ad3767d761bdbf591ab20ec88081e |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
| MD5 | 09d2ec9f18b54b081850fd910f43450a |
| SHA1 | e96c8d825fbaa3af0ffc3cd0b8f002ba77fbe6af |
| SHA256 | b2f950306537270467db9240417c555d064ce6eba0740b7e50744bc99a4407c5 |
| SHA512 | 5098d1f1b9f6c11f893595d80a70fea5249de949f95845558060c4f56a5f64debb29692b2ccb8ad62431c5351c695f55d378778ec4b75eb5d17977bb2eda057f |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 8202a1cd02e7d69597995cabbe881a12 |
| SHA1 | 8858d9d934b7aa9330ee73de6c476acf19929ff6 |
| SHA256 | 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5 |
| SHA512 | 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
| MD5 | 39fe7b75f674d2c10ae76a07629595ac |
| SHA1 | 65475de3143d46835193cead15a839d82c730231 |
| SHA256 | d935333f61ef10d6923d6bdf0bb9c663ec574ccaf4ec62fc26e9035fb1dc2212 |
| SHA512 | c5d11be98a779d956a8a93a737c30f52807dfb49171388cfbd0596e59fef9f1745363370c728a610e13ab3fad3eeb74e2cb931f78ecb81d1a09af9c018b41372 |
memory/4136-29-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-30-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-31-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-34-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-36-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-37-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-38-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4136-39-0x0000000000400000-0x0000000000537000-memory.dmp