Analysis Overview
SHA256
4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e
Threat Level: Known bad
The file 4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e was found to be: Known bad.
Malicious Activity Summary
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
Renames multiple (643) files with added filename extension
Renames multiple (356) files with added filename extension
Reads user/profile data of web browsers
Drops desktop.ini file(s)
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Unsigned PE
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-03-14 04:11
Signatures
Lockbit family
Rule to detect Lockbit 3.0 ransomware Windows payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-03-14 04:11
Reported
2024-03-14 04:13
Platform
win7-20240221-en
Max time kernel
118s
Max time network
119s
Command Line
Signatures
Renames multiple (356) files with added filename extension
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | N/A |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Processes
C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe
"C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe"
C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x14c
Network
Files
C:\CHR4bQVWh.README.txt
| MD5 | 1cd2c508680a93907346e98d6a1677e6 |
| SHA1 | 42ab98d499046fe5477610f5c256aff0b0f5be5e |
| SHA256 | f722457807534d1c563d6cfaa43e3a8b90d721dcef1d48c0a3921b4025cd6bda |
| SHA512 | 2757aeab0f7c2703e0dfb095b37aada25d2947d21c7c988e4dc4b842d07741f34e4f35447694bae5a60de374f6812c511fd912177c81f37a3efd578848ae574c |
memory/2160-0-0x0000000000170000-0x00000000001B0000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-3452737119-3959686427-228443150-1000\desktop.ini
| MD5 | 4984c45b20796a3ed9e782d8da1223f6 |
| SHA1 | 055c01ce85e1bed499a19468bbc8119e62ac4e46 |
| SHA256 | ae2f7466183e803efd7af83dcf58181ef684d005fcc80038b579277f6cea4719 |
| SHA512 | c4860d8bfd738aee708510f3dee79584f46f4da020b012637ce2f4bb6b676ac85f1473b2dece200c750debecc7cf36cb2dae8bc50f3acb42093b95a0c5bf459a |
F:\$RECYCLE.BIN\S-1-5-21-3452737119-3959686427-228443150-1000\DDDDDDDDDDD
| MD5 | ca5560d8dd6fc077d91c6138ccae3f6a |
| SHA1 | d98d0184b722fb2c33712d5e3d7a365bd98b954f |
| SHA256 | dc80b9ccb0ab22b859d8492cb73ff04ad61005bb24766d868b15067c4044b437 |
| SHA512 | 673aa9014e0fca354424c6304c7116c2e641ce9bf52a2d4ae1d49dc8c6b3d8d09ed46a0ec57e064aeda9cd34d494cc53751f1a1deeab8b27f699e3977b34e063 |
Analysis: behavioral2
Detonation Overview
Submitted
2024-03-14 04:11
Reported
2024-03-14 04:14
Platform
win10v2004-20240226-en
Max time kernel
165s
Max time network
177s
Command Line
Signatures
Renames multiple (643) files with added filename extension
Reads user/profile data of web browsers
Drops desktop.ini file(s)
| Description | Indicator | Process | Target |
| File opened for modification | C:\$Recycle.Bin\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | N/A |
| File opened for modification | F:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\spool\PRINTERS\00002.SPL | C:\Windows\splwow64.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PPq9_rjne6_syo18uyzdaze8k3c.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PP6hz1q0ww0t0i8t0nclw_tni3c.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
| File created | C:\Windows\system32\spool\PRINTERS\PPhd_ph_97xydvth0nzqcctcyqb.TMP | C:\Windows\system32\printfilterpipelinesvc.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE | N/A |
| N/A | N/A | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2200 wrote to memory of 3392 | N/A | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | C:\Windows\splwow64.exe |
| PID 2200 wrote to memory of 3392 | N/A | C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe | C:\Windows\splwow64.exe |
| PID 824 wrote to memory of 4772 | N/A | C:\Windows\system32\printfilterpipelinesvc.exe | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE |
| PID 824 wrote to memory of 4772 | N/A | C:\Windows\system32\printfilterpipelinesvc.exe | C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE |
Processes
C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.exe
"C:\Users\Admin\AppData\Local\Temp\4cefaa9c547f282b73828d5330a47d774fbf23e9cdafe1e4dc7507e9415ddb3e.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 --mojo-platform-channel-handle=4140 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
C:\Windows\system32\printfilterpipelinesvc.exe
C:\Windows\system32\printfilterpipelinesvc.exe -Embedding
C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE
/insertdoc "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\{3809BA42-D8C7-4FF4-B891-7115CD5CA3FE}.xps" 133548631902100000
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| US | 8.8.8.8:53 | chromewebstore.googleapis.com | udp |
| NL | 142.250.179.138:443 | chromewebstore.googleapis.com | tcp |
| US | 8.8.8.8:53 | 138.179.250.142.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 209.205.72.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.79.70.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 46.28.109.52.in-addr.arpa | udp |
Files
memory/2200-0-0x0000000003370000-0x0000000003380000-memory.dmp
memory/2200-1-0x0000000003370000-0x0000000003380000-memory.dmp
memory/2200-2-0x0000000003370000-0x0000000003380000-memory.dmp
C:\$Recycle.Bin\S-1-5-21-3808065738-1666277613-1125846146-1000\desktop.ini
| MD5 | 9b9c19145ae3c99e5fb313e2449ce306 |
| SHA1 | 3d568c1f7fbd6c6926bb473eb392e323fbd57c72 |
| SHA256 | 1f7f03023d38c4e33544c58380950691556556d52244981028b9faf933ff7d8b |
| SHA512 | fe88038223b7ba0756a50e4016ebe714d36aa3ad899a7433382002c4172fe38b72843675504bc54ebfcb9be9c9a0fd58654ccbc803e094e9548de1fcb3effbb6 |
F:\$RECYCLE.BIN\S-1-5-21-3808065738-1666277613-1125846146-1000\DDDDDDDDDDD
| MD5 | 692267a09866f827ed957d44d85b6b6f |
| SHA1 | a02c6746bcea0347e5b977bbe4daa3b205d39b31 |
| SHA256 | 2457123234c1f2b2ef5f19203d7587300ca7bdf42fe5b013f1e1c846e134d128 |
| SHA512 | 80692ad49546d5a5a2916db7bcd384255bedd9dca656b3402af253bbe29b7ad3aacd33eae66a081e3ce1faf56c2153b9697d55310b622b19085e9ce5825eea78 |
C:\CHR4bQVWh.README.txt
| MD5 | 1cd2c508680a93907346e98d6a1677e6 |
| SHA1 | 42ab98d499046fe5477610f5c256aff0b0f5be5e |
| SHA256 | f722457807534d1c563d6cfaa43e3a8b90d721dcef1d48c0a3921b4025cd6bda |
| SHA512 | 2757aeab0f7c2703e0dfb095b37aada25d2947d21c7c988e4dc4b842d07741f34e4f35447694bae5a60de374f6812c511fd912177c81f37a3efd578848ae574c |
memory/2200-1324-0x0000000003370000-0x0000000003380000-memory.dmp
memory/2200-1325-0x0000000003370000-0x0000000003380000-memory.dmp
memory/2200-1329-0x0000000003370000-0x0000000003380000-memory.dmp
memory/4772-2831-0x00007FF881A90000-0x00007FF881AA0000-memory.dmp
memory/4772-2832-0x00007FF881A90000-0x00007FF881AA0000-memory.dmp
memory/4772-2834-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
memory/4772-2833-0x00007FF881A90000-0x00007FF881AA0000-memory.dmp
memory/4772-2835-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
memory/4772-2837-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
memory/4772-2836-0x00007FF881A90000-0x00007FF881AA0000-memory.dmp
memory/4772-2838-0x00007FF881A90000-0x00007FF881AA0000-memory.dmp
memory/4772-2839-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp
memory/4772-2840-0x00007FF87F9A0000-0x00007FF87F9B0000-memory.dmp
memory/4772-2841-0x00007FF87F9A0000-0x00007FF87F9B0000-memory.dmp
memory/4772-2842-0x00007FF8C1A10000-0x00007FF8C1C05000-memory.dmp