Analysis
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max time kernel
145s -
max time network
164s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
09-11-2022 04:21
Behavioral task
behavioral1
Sample
bc667da68cdb653a8ddbaac351abfff1.exe
Resource
win7-20220812-en
General
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Target
bc667da68cdb653a8ddbaac351abfff1.exe
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Size
17.0MB
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MD5
bc667da68cdb653a8ddbaac351abfff1
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SHA1
cfb134d7605ff52cfddbc4655f2471a960be1163
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SHA256
74cac45a41661d0964d26c15bc5a128f88a5d281130b8189b6205f4217752587
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SHA512
d5e9f3ae6edd771c6a252782c6b61413643c924cb1d51beef542dee76fd6223b65a6620cc7408f2837a076566626dd545b0c1c5eff7a328199463080c1372022
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SSDEEP
393216:EuDuvvO4aSXfK5fb5BILAvQ0DpemdD+7bUpKFag8i3UJtUFhcyec+L9VYF:ivv7XyzgwZ+bNati3UJtUFixWF
Malware Config
Signatures
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Executes dropped EXE 4 IoCs
Processes:
rfusclient.exerutserv.exerutserv.exerfusclient.exepid process 1096 rfusclient.exe 1544 rutserv.exe 584 rutserv.exe 1304 rfusclient.exe -
Processes:
resource yara_rule behavioral1/memory/2012-55-0x0000000000400000-0x000000000291A000-memory.dmp upx behavioral1/memory/2012-61-0x0000000000400000-0x000000000291A000-memory.dmp upx -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
rfusclient.exerfusclient.exerutserv.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation rfusclient.exe Key value queried \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation rfusclient.exe Key value queried \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation rutserv.exe -
Loads dropped DLL 9 IoCs
Processes:
bc667da68cdb653a8ddbaac351abfff1.exerfusclient.exerutserv.exerutserv.exepid process 2012 bc667da68cdb653a8ddbaac351abfff1.exe 1096 rfusclient.exe 1096 rfusclient.exe 1096 rfusclient.exe 1096 rfusclient.exe 1544 rutserv.exe 1544 rutserv.exe 584 rutserv.exe 584 rutserv.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 4 IoCs
Processes:
rutserv.exedescription ioc process Set value (data) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\LanguageList = 65006e002d0055005300000065006e0000000000 rutserv.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\SysWOW64\ieframe.dll,-5723 = "The Internet" rutserv.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\prnfldr.dll,-8036 = "Printers" rutserv.exe Set value (str) \REGISTRY\USER\.DEFAULT\SOFTWARE\Classes\Local Settings\MuiCache\2D\52C64B7E\@C:\Windows\system32\NetworkExplorer.dll,-1 = "Network" rutserv.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
Processes:
rfusclient.exerutserv.exerutserv.exerfusclient.exepid process 1096 rfusclient.exe 1096 rfusclient.exe 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 1304 rfusclient.exe 1304 rfusclient.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
rutserv.exerutserv.exedescription pid process Token: SeDebugPrivilege 1544 rutserv.exe Token: SeTakeOwnershipPrivilege 584 rutserv.exe Token: SeTcbPrivilege 584 rutserv.exe Token: SeTcbPrivilege 584 rutserv.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
rfusclient.exepid process 1304 rfusclient.exe 1304 rfusclient.exe -
Suspicious use of SendNotifyMessage 2 IoCs
Processes:
rfusclient.exepid process 1304 rfusclient.exe 1304 rfusclient.exe -
Suspicious use of SetWindowsHookEx 9 IoCs
Processes:
rutserv.exerutserv.exepid process 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 1544 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe 584 rutserv.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
bc667da68cdb653a8ddbaac351abfff1.exerfusclient.exerutserv.exedescription pid process target process PID 2012 wrote to memory of 1096 2012 bc667da68cdb653a8ddbaac351abfff1.exe rfusclient.exe PID 2012 wrote to memory of 1096 2012 bc667da68cdb653a8ddbaac351abfff1.exe rfusclient.exe PID 2012 wrote to memory of 1096 2012 bc667da68cdb653a8ddbaac351abfff1.exe rfusclient.exe PID 2012 wrote to memory of 1096 2012 bc667da68cdb653a8ddbaac351abfff1.exe rfusclient.exe PID 1096 wrote to memory of 1544 1096 rfusclient.exe rutserv.exe PID 1096 wrote to memory of 1544 1096 rfusclient.exe rutserv.exe PID 1096 wrote to memory of 1544 1096 rfusclient.exe rutserv.exe PID 1096 wrote to memory of 1544 1096 rfusclient.exe rutserv.exe PID 584 wrote to memory of 1304 584 rutserv.exe rfusclient.exe PID 584 wrote to memory of 1304 584 rutserv.exe rfusclient.exe PID 584 wrote to memory of 1304 584 rutserv.exe rfusclient.exe PID 584 wrote to memory of 1304 584 rutserv.exe rfusclient.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bc667da68cdb653a8ddbaac351abfff1.exe"C:\Users\Admin\AppData\Local\Temp\bc667da68cdb653a8ddbaac351abfff1.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rfusclient.exe"C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rfusclient.exe" -run_agent2⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1096 -
C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rutserv.exe"C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rutserv.exe" -run_agent3⤵
- Executes dropped EXE
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1544 -
C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rutserv.exe"C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rutserv.exe" -run_agent -second4⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:584 -
C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rfusclient.exe"C:\Users\Admin\AppData\Roaming\RMS Agent\70170\BEB71E0117\rfusclient.exe" /tray /user5⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1304
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
292B
MD51470a7c288e33311c405de31d59928cc
SHA1109ef651c07a054ef04b06ac70667cfc0aaa374d
SHA256419dcedfb7a7462bfce1e8ef82229d27370d2196d52ef37d9c084e29ce538576
SHA5121efa03d91923915dd1d4e2bfd06691beadabc47477031d4451342ae70bca7405b84b103bc3facb0ce8a56289bd581df18bc5b7f382e40eea3a1be590b03292c8
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Filesize
51KB
MD54e84df6558c385bc781cddea34c9fba3
SHA16d63d87c19c11bdbfa484a5835ffffd7647296c8
SHA2560526073f28a3b5999528bfa0e680d668922499124f783f02c52a3b25c367ef6d
SHA512c35da0744568bfffeff09e6590d059e91e5d380c5feb3a0fbc5b19477ceca007a882884a7033345ce408fce1deac5248ad9b046656478d734fe494b787f8a9f2
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Filesize
1.3MB
MD55222eaf78313758b0520be16e3f8392e
SHA19c7cc8fb340618fef38422cf0c75c4c9bfb216e2
SHA2564771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
SHA512459503146f963c64777c56176e480e3334c5bcff2bfef14fc2925b38f1f32117c387dc957789e1691a68798c004c9e672460bda51edcc7b45fb0e1553bf66812
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Filesize
26KB
MD51b242b134dc22657e2bd29e721db3a92
SHA19f14605fcda6bf58ecd2682e68433455163ea6b4
SHA256dcd8c062c9f7013cbc032679be977c3d9ca5578e233d16a1887a6c00d7c9d378
SHA512d4e92868524f0aaa36297f2a2d9d6da44780c6fb2f464b2c0059a75feb1b47c535aacab0459c43d8c956947d21825e6424285252923ca14af9b7baebfae5ee5d
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Filesize
10.2MB
MD506208aa91f0f77d6c9b989f65803382a
SHA175e37439e6d1537fadf38c758df3a9fb232313cf
SHA256d576d6fcfdae0ac29d5b040847929b2f8a83436f6b2160a88e8c5ebc119654c5
SHA512a31e9c4c860873155690b90fb8f6d9ca30b084aa32ac94bb7e8ad90ca8d6d89349dc4924eafb2b689ef9ebaf5faa264d9f6c062818d844d17baae7793ba2ec1e
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Filesize
10.2MB
MD506208aa91f0f77d6c9b989f65803382a
SHA175e37439e6d1537fadf38c758df3a9fb232313cf
SHA256d576d6fcfdae0ac29d5b040847929b2f8a83436f6b2160a88e8c5ebc119654c5
SHA512a31e9c4c860873155690b90fb8f6d9ca30b084aa32ac94bb7e8ad90ca8d6d89349dc4924eafb2b689ef9ebaf5faa264d9f6c062818d844d17baae7793ba2ec1e
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Filesize
10.2MB
MD506208aa91f0f77d6c9b989f65803382a
SHA175e37439e6d1537fadf38c758df3a9fb232313cf
SHA256d576d6fcfdae0ac29d5b040847929b2f8a83436f6b2160a88e8c5ebc119654c5
SHA512a31e9c4c860873155690b90fb8f6d9ca30b084aa32ac94bb7e8ad90ca8d6d89349dc4924eafb2b689ef9ebaf5faa264d9f6c062818d844d17baae7793ba2ec1e
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
10KB
MD58d8b3996f88ee889895137f01d8b68c7
SHA102594adf560ed60a42a0adeb16244c243dcce5a7
SHA2560609ec2231f6bef5a5b34a18acf1f049a9a14b53b9011aba3f1a956125687a2f
SHA512f782c36cebe1f2cb5944a7264155890b285d6dd9545e10f0c0c78a5e4cb255508bc6fa741c4282fb0a84f22386bc206ace5c2e4411f28c6241634e8cc3b9b054
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Filesize
337KB
MD590a4b7fc6807693e68dd32b68614d989
SHA1785484ef531ca90f323d5b017fefcff05e68093a
SHA2564f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
SHA51297b970cb24774f141042149ac53e45b3fc42f9ce911c0ca774aa3812f48d7744434bf31d217b2a8522439d0e3f71048cc916556c18a71be61b203c942373a81c
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Filesize
379KB
MD5e247666cdea63da5a95aebc135908207
SHA14642f6c3973c41b7d1c9a73111a26c2d7ac9c392
SHA256b419ed0374e3789b4f83d4af601f796d958e366562a0aaea5d2f81e82abdcf33
SHA51206da11e694d5229783cfb058dcd04d855a1d0758beeaa97bcd886702a1502d0bf542e7890aa8f2e401be36ccf70376b5c091a5d328bb1abe738bc0798ab98a54
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Filesize
1.6MB
MD5d5c2a6ac30e76b7c9b55adf1fe5c1e4a
SHA13d841eb48d1a32b511611d4b9e6eed71e2c373ee
SHA25611c7004851e6e6624158990dc8abe3aa517bcab708364d469589ad0ca3dba428
SHA5123c1c7fb535e779ac6c0d5aef2d4e9239f1c27136468738a0bd8587f91b99365a38808be31380be98fd74063d266654a6ac2c2e88861a3fe314a95f1296699e1d
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Filesize
259KB
MD549c51ace274d7db13caa533880869a4a
SHA1b539ed2f1a15e2d4e5c933611d736e0c317b8313
SHA2561d6407d7c7ffd2642ea7f97c86100514e8e44f58ff522475cb42bcc43a1b172b
SHA51213440009e2f63078dce466bf2fe54c60feb6cedeed6e9e6fc592189c50b0780543c936786b7051311089f39e9e3ccb67f705c54781c4cae6d3a8007998befbf6
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Filesize
364KB
MD5eda07083af5b6608cb5b7c305d787842
SHA1d1703c23522d285a3ccdaf7ba2eb837d40608867
SHA256c4683eb09d65d692ca347c0c21f72b086bd2faf733b13234f3a6b28444457d7d
SHA512be5879621d544c4e2c4b0a5db3d93720623e89e841b2982c7f6c99ba58d30167e0dd591a12048ed045f19ec45877aa2ef631b301b903517effa17579c4b7c401
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Filesize
859KB
MD5642dc7e57f0c962b9db4c8fb346bc5a7
SHA1acee24383b846f7d12521228d69135e5704546f6
SHA25663b4b5db4a96a8abec82b64034f482b433cd4168c960307ac5cc66d2fbf67ede
SHA512fb163a0ce4e3ad0b0a337f5617a7bf59070df05cc433b6463384e8687af3edc197e447609a0d86fe25ba3ee2717fd470f2620a8fc3a2998a7c3b3a40530d0bae
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Filesize
1.3MB
MD55222eaf78313758b0520be16e3f8392e
SHA19c7cc8fb340618fef38422cf0c75c4c9bfb216e2
SHA2564771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
SHA512459503146f963c64777c56176e480e3334c5bcff2bfef14fc2925b38f1f32117c387dc957789e1691a68798c004c9e672460bda51edcc7b45fb0e1553bf66812
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Filesize
1.3MB
MD55222eaf78313758b0520be16e3f8392e
SHA19c7cc8fb340618fef38422cf0c75c4c9bfb216e2
SHA2564771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
SHA512459503146f963c64777c56176e480e3334c5bcff2bfef14fc2925b38f1f32117c387dc957789e1691a68798c004c9e672460bda51edcc7b45fb0e1553bf66812
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Filesize
10.2MB
MD506208aa91f0f77d6c9b989f65803382a
SHA175e37439e6d1537fadf38c758df3a9fb232313cf
SHA256d576d6fcfdae0ac29d5b040847929b2f8a83436f6b2160a88e8c5ebc119654c5
SHA512a31e9c4c860873155690b90fb8f6d9ca30b084aa32ac94bb7e8ad90ca8d6d89349dc4924eafb2b689ef9ebaf5faa264d9f6c062818d844d17baae7793ba2ec1e
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
19.8MB
MD541dc282cbf89b0737ae6dd2de5a71015
SHA14aac4bafaf43be690089549584770f9e88630b45
SHA256b8049a022430c34f0b8b3c9f357a9afa4fd6cb940b7353a610d1f53fb5bf471c
SHA512ee8f3af6c633385eb1c7022189604c16948fd9fb0da1eb017d529872df2f075b26bdc158cf2ef4772237f338d87d9f6dc1944381cd65c5a636add0e22a599d6d
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Filesize
337KB
MD590a4b7fc6807693e68dd32b68614d989
SHA1785484ef531ca90f323d5b017fefcff05e68093a
SHA2564f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
SHA51297b970cb24774f141042149ac53e45b3fc42f9ce911c0ca774aa3812f48d7744434bf31d217b2a8522439d0e3f71048cc916556c18a71be61b203c942373a81c
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Filesize
337KB
MD590a4b7fc6807693e68dd32b68614d989
SHA1785484ef531ca90f323d5b017fefcff05e68093a
SHA2564f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
SHA51297b970cb24774f141042149ac53e45b3fc42f9ce911c0ca774aa3812f48d7744434bf31d217b2a8522439d0e3f71048cc916556c18a71be61b203c942373a81c