Analysis
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max time kernel
147s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
24-05-2022 14:57
Static task
static1
Behavioral task
behavioral1
Sample
cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe
Resource
win7-20220414-en
General
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Target
cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe
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Size
4.0MB
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MD5
acf3ffe4ef28ee077026078d3aef11be
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SHA1
3e349d572a82b1df3bd61970640aa50ef6bbed78
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SHA256
cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29
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SHA512
00715f0162e8490a743eb307be942373528347e5b9cdfa92b5ab63c16d03ebac2a3925b54e40ad3e7023b2b0b6f9ffb71f09d213b76b7fc7245bae24ebfd0b72
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/0x0006000000022ed3-171.dat acprotect behavioral2/files/0x0006000000022ed2-170.dat acprotect -
resource yara_rule behavioral2/files/0x0006000000022ed1-141.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed1-142.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed1-150.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed1-158.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed1-164.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed0-172.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed0-176.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed0-177.dat aspack_v212_v242 behavioral2/files/0x0006000000022ed0-189.dat aspack_v212_v242 -
Executes dropped EXE 7 IoCs
pid Process 4268 rutserv.exe 4208 rutserv.exe 836 rutserv.exe 1564 rutserv.exe 2016 rfusclient.exe 4200 rfusclient.exe 4240 rfusclient.exe -
resource yara_rule behavioral2/files/0x0006000000022ed3-171.dat upx behavioral2/files/0x0006000000022ed2-170.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-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe Key value queried \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation WScript.exe -
Drops file in Program Files directory 15 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\rfusclient.exe cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\vp8encoder.dll cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\vp8encoder.dll cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\install.vbs cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\rfusclient.exe cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\install.bat cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\regedit.reg cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\__tmp_rar_sfx_access_check_240559703 cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\vp8decoder.dll cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\regedit.reg cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\rutserv.exe cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\rutserv.exe cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\vp8decoder.dll cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File created C:\Program Files (x86)\install.vbs cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe File opened for modification C:\Program Files (x86)\install.bat cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.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 2440 timeout.exe -
Kills process with taskkill 2 IoCs
pid Process 4408 taskkill.exe 4016 taskkill.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000_Classes\Local Settings cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe -
Runs .reg file with regedit 1 IoCs
pid Process 4752 regedit.exe -
Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4268 rutserv.exe 4268 rutserv.exe 4268 rutserv.exe 4268 rutserv.exe 4268 rutserv.exe 4268 rutserv.exe 4208 rutserv.exe 4208 rutserv.exe 836 rutserv.exe 836 rutserv.exe 1564 rutserv.exe 1564 rutserv.exe 1564 rutserv.exe 1564 rutserv.exe 1564 rutserv.exe 1564 rutserv.exe 4200 rfusclient.exe 4200 rfusclient.exe -
Suspicious behavior: SetClipboardViewer 1 IoCs
pid Process 4240 rfusclient.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 4408 taskkill.exe Token: SeDebugPrivilege 4016 taskkill.exe Token: SeDebugPrivilege 4268 rutserv.exe Token: SeDebugPrivilege 836 rutserv.exe Token: SeTakeOwnershipPrivilege 1564 rutserv.exe Token: SeTcbPrivilege 1564 rutserv.exe Token: SeTcbPrivilege 1564 rutserv.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 4268 rutserv.exe 4208 rutserv.exe 836 rutserv.exe 1564 rutserv.exe -
Suspicious use of WriteProcessMemory 39 IoCs
description pid Process procid_target PID 2404 wrote to memory of 3764 2404 cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe 79 PID 2404 wrote to memory of 3764 2404 cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe 79 PID 2404 wrote to memory of 3764 2404 cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe 79 PID 3764 wrote to memory of 3980 3764 WScript.exe 80 PID 3764 wrote to memory of 3980 3764 WScript.exe 80 PID 3764 wrote to memory of 3980 3764 WScript.exe 80 PID 3980 wrote to memory of 4408 3980 cmd.exe 82 PID 3980 wrote to memory of 4408 3980 cmd.exe 82 PID 3980 wrote to memory of 4408 3980 cmd.exe 82 PID 3980 wrote to memory of 4016 3980 cmd.exe 83 PID 3980 wrote to memory of 4016 3980 cmd.exe 83 PID 3980 wrote to memory of 4016 3980 cmd.exe 83 PID 3980 wrote to memory of 2420 3980 cmd.exe 84 PID 3980 wrote to memory of 2420 3980 cmd.exe 84 PID 3980 wrote to memory of 2420 3980 cmd.exe 84 PID 3980 wrote to memory of 4752 3980 cmd.exe 85 PID 3980 wrote to memory of 4752 3980 cmd.exe 85 PID 3980 wrote to memory of 4752 3980 cmd.exe 85 PID 3980 wrote to memory of 2440 3980 cmd.exe 86 PID 3980 wrote to memory of 2440 3980 cmd.exe 86 PID 3980 wrote to memory of 2440 3980 cmd.exe 86 PID 3980 wrote to memory of 4268 3980 cmd.exe 87 PID 3980 wrote to memory of 4268 3980 cmd.exe 87 PID 3980 wrote to memory of 4268 3980 cmd.exe 87 PID 3980 wrote to memory of 4208 3980 cmd.exe 88 PID 3980 wrote to memory of 4208 3980 cmd.exe 88 PID 3980 wrote to memory of 4208 3980 cmd.exe 88 PID 3980 wrote to memory of 836 3980 cmd.exe 89 PID 3980 wrote to memory of 836 3980 cmd.exe 89 PID 3980 wrote to memory of 836 3980 cmd.exe 89 PID 1564 wrote to memory of 4200 1564 rutserv.exe 92 PID 1564 wrote to memory of 4200 1564 rutserv.exe 92 PID 1564 wrote to memory of 4200 1564 rutserv.exe 92 PID 1564 wrote to memory of 2016 1564 rutserv.exe 91 PID 1564 wrote to memory of 2016 1564 rutserv.exe 91 PID 1564 wrote to memory of 2016 1564 rutserv.exe 91 PID 4200 wrote to memory of 4240 4200 rfusclient.exe 98 PID 4200 wrote to memory of 4240 4200 rfusclient.exe 98 PID 4200 wrote to memory of 4240 4200 rfusclient.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe"C:\Users\Admin\AppData\Local\Temp\cb37229f83a7f00da748cddb5fa77777c20dca45f3d92db247521af009307e29.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2404 -
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Program Files (x86)\install.vbs"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3764 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Program Files (x86)\install.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:3980 -
C:\Windows\SysWOW64\taskkill.exetaskkill /f /im rutserv.exe4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4408
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C:\Windows\SysWOW64\taskkill.exetaskkill /f /im rfusclient.exe4⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4016
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C:\Windows\SysWOW64\reg.exereg delete "HKLM\SYSTEM\Remote Manipulator System" /f4⤵PID:2420
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C:\Windows\SysWOW64\regedit.exeregedit /s "regedit.reg"4⤵
- Runs .reg file with regedit
PID:4752
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C:\Windows\SysWOW64\timeout.exetimeout 24⤵
- Delays execution with timeout.exe
PID:2440
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C:\Program Files (x86)\rutserv.exerutserv.exe /silentinstall4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4268
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C:\Program Files (x86)\rutserv.exerutserv.exe /firewall4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4208
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C:\Program Files (x86)\rutserv.exerutserv.exe /start4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:836
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C:\Program Files (x86)\rutserv.exe"C:\Program Files (x86)\rutserv.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1564 -
C:\Program Files (x86)\rfusclient.exe"C:\Program Files (x86)\rfusclient.exe" /tray2⤵
- Executes dropped EXE
PID:2016
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C:\Program Files (x86)\rfusclient.exe"C:\Program Files (x86)\rfusclient.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4200 -
C:\Program Files (x86)\rfusclient.exe"C:\Program Files (x86)\rfusclient.exe" /tray3⤵
- Executes dropped EXE
- Suspicious behavior: SetClipboardViewer
PID:4240
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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
MD5fd7cf7462771593575da369c77ca2f19
SHA1f5c3eff1fe65506378341522880a6975e731ae95
SHA2567c7df6c5b6c080718f585dfa9d1d2b5b1ee6b02908d59fe5c4a6e8f4d1b98e18
SHA5129fb1168f5576b592c576cd0cf10ca23387ef37ee59a675d9e6d55e93a3d2511b7a3d1c3bfb03b88fe9682a49a3df93c4abf31a0b53c5011d6461267a71f4b486
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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