Analysis
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max time kernel
193s -
max time network
199s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
27-04-2022 17:59
Static task
static1
Behavioral task
behavioral1
Sample
b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe
Resource
win7-20220414-en
General
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Target
b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe
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Size
3.9MB
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MD5
42e5bcd207d5a1e3c2653b7e4395d9fc
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SHA1
c64912f0135901d83953aa31dd9878f660af7930
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SHA256
b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3
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SHA512
945629d88b41154abb1085174b6fea142f1b96a5810eab4a9125f1d6f08c9fd61488b67e75d882ea35b5160860e30b0f1e2a0b2bc9584e66b1ec88ad0afdafcd
Malware Config
Signatures
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ACProtect 1.3x - 1.4x DLL software 2 IoCs
Detects file using ACProtect software.
resource yara_rule behavioral2/files/0x000600000002312a-170.dat acprotect behavioral2/files/0x000600000002312b-171.dat acprotect -
resource yara_rule behavioral2/files/0x0006000000023129-141.dat aspack_v212_v242 behavioral2/files/0x0006000000023129-142.dat aspack_v212_v242 behavioral2/files/0x0006000000023129-150.dat aspack_v212_v242 behavioral2/files/0x0006000000023129-158.dat aspack_v212_v242 behavioral2/files/0x0006000000023129-164.dat aspack_v212_v242 behavioral2/files/0x0006000000023128-172.dat aspack_v212_v242 behavioral2/files/0x0006000000023128-176.dat aspack_v212_v242 behavioral2/files/0x0006000000023128-175.dat aspack_v212_v242 behavioral2/files/0x0006000000023128-189.dat aspack_v212_v242 -
Executes dropped EXE 7 IoCs
pid Process 4224 rutserv.exe 2932 rutserv.exe 3420 rutserv.exe 448 rutserv.exe 4156 rfusclient.exe 4248 rfusclient.exe 1080 rfusclient.exe -
resource yara_rule behavioral2/files/0x000600000002312a-170.dat upx behavioral2/files/0x000600000002312b-171.dat upx -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation WScript.exe -
Drops file in Program Files directory 16 IoCs
description ioc Process File created C:\Program Files (x86)\System\__tmp_rar_sfx_access_check_240596125 b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\install.bat b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\install.vbs b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\vp8decoder.dll b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\vp8encoder.dll b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\rfusclient.exe b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\vp8decoder.dll b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\vp8encoder.dll b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\regedit.reg b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\install.bat b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\install.vbs b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\rfusclient.exe b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File opened for modification C:\Program Files (x86)\System\rutserv.exe b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\rutserv.exe b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe File created C:\Program Files (x86)\System\regedit.reg b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Delays execution with timeout.exe 1 IoCs
pid Process 4668 timeout.exe -
Kills process with taskkill 2 IoCs
pid Process 4752 taskkill.exe 728 taskkill.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000_Classes\Local Settings b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe -
Runs .reg file with regedit 1 IoCs
pid Process 4596 regedit.exe -
Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4224 rutserv.exe 4224 rutserv.exe 4224 rutserv.exe 4224 rutserv.exe 4224 rutserv.exe 4224 rutserv.exe 2932 rutserv.exe 2932 rutserv.exe 3420 rutserv.exe 3420 rutserv.exe 448 rutserv.exe 448 rutserv.exe 448 rutserv.exe 448 rutserv.exe 448 rutserv.exe 448 rutserv.exe 4156 rfusclient.exe 4156 rfusclient.exe -
Suspicious behavior: SetClipboardViewer 1 IoCs
pid Process 1080 rfusclient.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 4752 taskkill.exe Token: SeDebugPrivilege 728 taskkill.exe Token: SeDebugPrivilege 4224 rutserv.exe Token: SeDebugPrivilege 3420 rutserv.exe Token: SeTakeOwnershipPrivilege 448 rutserv.exe Token: SeTcbPrivilege 448 rutserv.exe Token: SeTcbPrivilege 448 rutserv.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4224 rutserv.exe 2932 rutserv.exe 3420 rutserv.exe 448 rutserv.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 3688 wrote to memory of 3872 3688 b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe 80 PID 3688 wrote to memory of 3872 3688 b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe 80 PID 3688 wrote to memory of 3872 3688 b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe 80 PID 3872 wrote to memory of 4680 3872 WScript.exe 81 PID 3872 wrote to memory of 4680 3872 WScript.exe 81 PID 3872 wrote to memory of 4680 3872 WScript.exe 81 PID 4680 wrote to memory of 4752 4680 cmd.exe 83 PID 4680 wrote to memory of 4752 4680 cmd.exe 83 PID 4680 wrote to memory of 4752 4680 cmd.exe 83 PID 4680 wrote to memory of 728 4680 cmd.exe 85 PID 4680 wrote to memory of 728 4680 cmd.exe 85 PID 4680 wrote to memory of 728 4680 cmd.exe 85 PID 4680 wrote to memory of 408 4680 cmd.exe 86 PID 4680 wrote to memory of 408 4680 cmd.exe 86 PID 4680 wrote to memory of 408 4680 cmd.exe 86 PID 4680 wrote to memory of 4596 4680 cmd.exe 88 PID 4680 wrote to memory of 4596 4680 cmd.exe 88 PID 4680 wrote to memory of 4596 4680 cmd.exe 88 PID 4680 wrote to memory of 4668 4680 cmd.exe 89 PID 4680 wrote to memory of 4668 4680 cmd.exe 89 PID 4680 wrote to memory of 4668 4680 cmd.exe 89 PID 4680 wrote to memory of 4224 4680 cmd.exe 92 PID 4680 wrote to memory of 4224 4680 cmd.exe 92 PID 4680 wrote to memory of 4224 4680 cmd.exe 92 PID 4680 wrote to memory of 2932 4680 cmd.exe 94 PID 4680 wrote to memory of 2932 4680 cmd.exe 94 PID 4680 wrote to memory of 2932 4680 cmd.exe 94 PID 4680 wrote to memory of 3420 4680 cmd.exe 95 PID 4680 wrote to memory of 3420 4680 cmd.exe 95 PID 4680 wrote to memory of 3420 4680 cmd.exe 95 PID 448 wrote to memory of 4156 448 rutserv.exe 101 PID 448 wrote to memory of 4156 448 rutserv.exe 101 PID 448 wrote to memory of 4156 448 rutserv.exe 101 PID 448 wrote to memory of 4248 448 rutserv.exe 100 PID 448 wrote to memory of 4248 448 rutserv.exe 100 PID 448 wrote to memory of 4248 448 rutserv.exe 100 PID 4156 wrote to memory of 1080 4156 rfusclient.exe 104 PID 4156 wrote to memory of 1080 4156 rfusclient.exe 104 PID 4156 wrote to memory of 1080 4156 rfusclient.exe 104
Processes
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C:\Users\Admin\AppData\Local\Temp\b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe"C:\Users\Admin\AppData\Local\Temp\b2edb4fbce81855d476856b1aa8f298084a4aa6e46b987554dafe8187f5cfab3.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3688 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Program Files (x86)\System\install.vbs"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3872 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Program Files (x86)\System\install.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:4680 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im rutserv.exe4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4752
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im rfusclient.exe4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:728
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C:\Windows\SysWOW64\reg.exereg delete "HKLM\SYSTEM\Remote Manipulator System" /f4⤵PID:408
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C:\Windows\SysWOW64\regedit.exeregedit /s "regedit.reg"4⤵
- Runs .reg file with regedit
PID:4596
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C:\Windows\SysWOW64\timeout.exetimeout 24⤵
- Delays execution with timeout.exe
PID:4668
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C:\Program Files (x86)\System\rutserv.exerutserv.exe /silentinstall4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4224
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C:\Program Files (x86)\System\rutserv.exerutserv.exe /firewall4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:2932
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C:\Program Files (x86)\System\rutserv.exerutserv.exe /start4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3420
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C:\Program Files (x86)\System\rutserv.exe"C:\Program Files (x86)\System\rutserv.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:448 -
C:\Program Files (x86)\System\rfusclient.exe"C:\Program Files (x86)\System\rfusclient.exe" /tray2⤵
- Executes dropped EXE
PID:4248
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C:\Program Files (x86)\System\rfusclient.exe"C:\Program Files (x86)\System\rfusclient.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4156 -
C:\Program Files (x86)\System\rfusclient.exe"C:\Program Files (x86)\System\rfusclient.exe" /tray3⤵
- Executes dropped EXE
- Suspicious behavior: SetClipboardViewer
PID:1080
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
480B
MD599db27d776e103cad354b531ee1f20b9
SHA10b82d146df8528f66d1d14756f211fd3a8b1b91a
SHA256240020a1a1941d1455135b5cb134e502a13b148be16cbb1552482aa03c29f8f3
SHA512bc2ed33495c0a752397b2f1b9b7ba65f94ea5be82dde74c618342c83b68f1b92a4783b672cd427843533799e1af0875e0fd000b12236852e9e2fa93005d7ac69
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Filesize
117B
MD565fc32766a238ff3e95984e325357dbb
SHA13ac16a2648410be8aa75f3e2817fbf69bb0e8922
SHA256a7b067e9e4d44efe579c7cdb1e847d61af2323d3d73c6fffb22e178ae476f420
SHA512621e81fc2d0f9dd92413481864638a140bee94c7dbd31f944826b21bd6ad6b8a59e63de9f7f0025cffc0efb7f9975dde77f523510ee23ada62c152a63a22f608
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Filesize
11KB
MD55e2bd8f8dacf1890a6275b51342fafc5
SHA129c2d1d951de808effc17799c6b9790323304ab9
SHA256a0a3baaf5ec4f7b6614698f55c82e5eb68543da6cd8a3769ad514c38ba1a03a9
SHA51210d874021238ba2b765f6948df4e56e9fd2d3fe53d61a1f44eb350e62727f1968185babed9f27e715b59158a0314d50d33abd323be00032290708d8fca922e09
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Filesize
1.5MB
MD5b8667a1e84567fcf7821bcefb6a444af
SHA19c1f91fe77ad357c8f81205d65c9067a270d61f0
SHA256dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
SHA512ec6af663a3b41719d684f04504746f91196105ef6f8baa013b4bd02df6684eca49049d5517691f8e3a4ba6351fe35545a27f728b1d29d949e950d574a012f852
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Filesize
1.5MB
MD5b8667a1e84567fcf7821bcefb6a444af
SHA19c1f91fe77ad357c8f81205d65c9067a270d61f0
SHA256dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
SHA512ec6af663a3b41719d684f04504746f91196105ef6f8baa013b4bd02df6684eca49049d5517691f8e3a4ba6351fe35545a27f728b1d29d949e950d574a012f852
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Filesize
1.5MB
MD5b8667a1e84567fcf7821bcefb6a444af
SHA19c1f91fe77ad357c8f81205d65c9067a270d61f0
SHA256dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
SHA512ec6af663a3b41719d684f04504746f91196105ef6f8baa013b4bd02df6684eca49049d5517691f8e3a4ba6351fe35545a27f728b1d29d949e950d574a012f852
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Filesize
1.5MB
MD5b8667a1e84567fcf7821bcefb6a444af
SHA19c1f91fe77ad357c8f81205d65c9067a270d61f0
SHA256dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
SHA512ec6af663a3b41719d684f04504746f91196105ef6f8baa013b4bd02df6684eca49049d5517691f8e3a4ba6351fe35545a27f728b1d29d949e950d574a012f852
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Filesize
1.7MB
MD537a8802017a212bb7f5255abc7857969
SHA1cb10c0d343c54538d12db8ed664d0a1fa35b6109
SHA2561699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
SHA5124e20141da8ea4499daf8be5cc41b664dc4229e9575765caf6dc5873d8d0a09f9e200988e1404e767d0415005876a4cf38d5737bd3e1b2c12c4a8fb28adb4f0a0
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Filesize
1.7MB
MD537a8802017a212bb7f5255abc7857969
SHA1cb10c0d343c54538d12db8ed664d0a1fa35b6109
SHA2561699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
SHA5124e20141da8ea4499daf8be5cc41b664dc4229e9575765caf6dc5873d8d0a09f9e200988e1404e767d0415005876a4cf38d5737bd3e1b2c12c4a8fb28adb4f0a0
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Filesize
1.7MB
MD537a8802017a212bb7f5255abc7857969
SHA1cb10c0d343c54538d12db8ed664d0a1fa35b6109
SHA2561699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
SHA5124e20141da8ea4499daf8be5cc41b664dc4229e9575765caf6dc5873d8d0a09f9e200988e1404e767d0415005876a4cf38d5737bd3e1b2c12c4a8fb28adb4f0a0
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Filesize
1.7MB
MD537a8802017a212bb7f5255abc7857969
SHA1cb10c0d343c54538d12db8ed664d0a1fa35b6109
SHA2561699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
SHA5124e20141da8ea4499daf8be5cc41b664dc4229e9575765caf6dc5873d8d0a09f9e200988e1404e767d0415005876a4cf38d5737bd3e1b2c12c4a8fb28adb4f0a0
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Filesize
1.7MB
MD537a8802017a212bb7f5255abc7857969
SHA1cb10c0d343c54538d12db8ed664d0a1fa35b6109
SHA2561699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
SHA5124e20141da8ea4499daf8be5cc41b664dc4229e9575765caf6dc5873d8d0a09f9e200988e1404e767d0415005876a4cf38d5737bd3e1b2c12c4a8fb28adb4f0a0
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Filesize
155KB
MD588318158527985702f61d169434a4940
SHA13cc751ba256b5727eb0713aad6f554ff1e7bca57
SHA2564c04d7968a9fe9d9258968d3a722263334bbf5f8af972f206a71f17fa293aa74
SHA5125d88562b6c6d2a5b14390512712819238cd838914f7c48a27f017827cb9b825c24ff05a30333427acec93cd836e8f04158b86d17e6ac3dd62c55b2e2ff4e2aff
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Filesize
593KB
MD56298c0af3d1d563834a218a9cc9f54bd
SHA10185cd591e454ed072e5a5077b25c612f6849dc9
SHA25681af82019d9f45a697a8ca1788f2c5c0205af9892efd94879dedf4bc06db4172
SHA512389d89053689537cdb582c0e8a7951a84549f0c36484db4346c31bdbe7cb93141f6a354069eb13e550297dc8ec35cd6899746e0c16abc876a0fe542cc450fffe