Analysis
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max time kernel
187s -
max time network
185s -
platform
windows7_x64 -
resource
win7-20221111-en -
resource tags
arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system -
submitted
28/11/2022, 01:47
Static task
static1
Behavioral task
behavioral1
Sample
d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe
Resource
win10v2004-20221111-en
General
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Target
d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe
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Size
329KB
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MD5
f242a8b174bfb4c818e93e24d1847ecc
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SHA1
2315c5175def6112cd04925246efb85e4145a0be
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SHA256
d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f
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SHA512
aa0083726211b64f21c0e1922da1cb80d4aabbf9b362b8c36dd6fdfc09fd3805c4a1ea02e245f2ec18ac060c7203de813f7e19d5cf69a9cb6ab9d4ccc8c17206
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SSDEEP
6144:jYwaU+TjJl6Qy/VOoUKIVflNiLoWtM89QJTPPWZYbssN:swP+PWQEOooiX+89Q1nWZUN
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 368 assoen.exe -
Deletes itself 1 IoCs
pid Process 1592 cmd.exe -
Loads dropped DLL 2 IoCs
pid Process 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\Currentversion\Run assoen.exe Set value (str) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Windows\CurrentVersion\Run\{7B2FDFC8-3774-AD4D-C411-AE4FF0968D52} = "C:\\Users\\Admin\\AppData\\Roaming\\Kojau\\assoen.exe" assoen.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 344 set thread context of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Privacy d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe Set value (int) \REGISTRY\USER\S-1-5-21-3406023954-474543476-3319432036-1000\Software\Microsoft\Internet Explorer\Privacy\CleanCookies = "0" d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe -
Suspicious behavior: EnumeratesProcesses 24 IoCs
pid Process 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe 368 assoen.exe -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 368 assoen.exe -
Suspicious use of WriteProcessMemory 33 IoCs
description pid Process procid_target PID 344 wrote to memory of 368 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 28 PID 344 wrote to memory of 368 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 28 PID 344 wrote to memory of 368 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 28 PID 344 wrote to memory of 368 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 28 PID 368 wrote to memory of 1132 368 assoen.exe 15 PID 368 wrote to memory of 1132 368 assoen.exe 15 PID 368 wrote to memory of 1132 368 assoen.exe 15 PID 368 wrote to memory of 1132 368 assoen.exe 15 PID 368 wrote to memory of 1132 368 assoen.exe 15 PID 368 wrote to memory of 1172 368 assoen.exe 14 PID 368 wrote to memory of 1172 368 assoen.exe 14 PID 368 wrote to memory of 1172 368 assoen.exe 14 PID 368 wrote to memory of 1172 368 assoen.exe 14 PID 368 wrote to memory of 1172 368 assoen.exe 14 PID 368 wrote to memory of 1204 368 assoen.exe 13 PID 368 wrote to memory of 1204 368 assoen.exe 13 PID 368 wrote to memory of 1204 368 assoen.exe 13 PID 368 wrote to memory of 1204 368 assoen.exe 13 PID 368 wrote to memory of 1204 368 assoen.exe 13 PID 368 wrote to memory of 344 368 assoen.exe 20 PID 368 wrote to memory of 344 368 assoen.exe 20 PID 368 wrote to memory of 344 368 assoen.exe 20 PID 368 wrote to memory of 344 368 assoen.exe 20 PID 368 wrote to memory of 344 368 assoen.exe 20 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29 PID 344 wrote to memory of 1592 344 d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe 29
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵PID:1204
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C:\Users\Admin\AppData\Local\Temp\d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe"C:\Users\Admin\AppData\Local\Temp\d09af56af9cb416bbfd68f178afa718061a8fe0b469f01c334cb0b8daaecc04f.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:344 -
C:\Users\Admin\AppData\Roaming\Kojau\assoen.exe"C:\Users\Admin\AppData\Roaming\Kojau\assoen.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:368
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmp45033879.bat"3⤵
- Deletes itself
PID:1592
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C:\Windows\system32\Dwm.exe"C:\Windows\system32\Dwm.exe"1⤵PID:1172
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C:\Windows\system32\taskhost.exe"taskhost.exe"1⤵PID:1132
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
307B
MD587328ef07f41e20ca794474a4819e8d8
SHA12a74d729e492687938f3ccb111a6d2d1de713325
SHA25668070160868b1e67b93f92591d4a26ab3db92bf7b90fccec94a7a096c3402cf9
SHA5120482f50eb42b9b6b7fb8aaeaf138f3d016d02bea7d7da93ee5a907d4e0d0340371e3fcda9f02fd1a69e0fa08c13ea12aab9a76f0b5303ac306f23e234d6be4cd
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Filesize
329KB
MD5a5b7dc9a7ea7162afec87b05a4c07db4
SHA1f39921b610cec1d62c1f737eb8cd1d077562bfa4
SHA256c24ea2b219d71de0b847db4ae139eaba04d5a0612806978ab6b61b38b6fd7929
SHA5127f5e694c4562307f4e1745657a3f9372453b163d82d25bba0758f1cad34a95712d9398c4c49df808414bae7080a0c2620dc8e608aa460df6fea51094f1347a56
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Filesize
329KB
MD5a5b7dc9a7ea7162afec87b05a4c07db4
SHA1f39921b610cec1d62c1f737eb8cd1d077562bfa4
SHA256c24ea2b219d71de0b847db4ae139eaba04d5a0612806978ab6b61b38b6fd7929
SHA5127f5e694c4562307f4e1745657a3f9372453b163d82d25bba0758f1cad34a95712d9398c4c49df808414bae7080a0c2620dc8e608aa460df6fea51094f1347a56
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Filesize
329KB
MD5a5b7dc9a7ea7162afec87b05a4c07db4
SHA1f39921b610cec1d62c1f737eb8cd1d077562bfa4
SHA256c24ea2b219d71de0b847db4ae139eaba04d5a0612806978ab6b61b38b6fd7929
SHA5127f5e694c4562307f4e1745657a3f9372453b163d82d25bba0758f1cad34a95712d9398c4c49df808414bae7080a0c2620dc8e608aa460df6fea51094f1347a56
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Filesize
329KB
MD5a5b7dc9a7ea7162afec87b05a4c07db4
SHA1f39921b610cec1d62c1f737eb8cd1d077562bfa4
SHA256c24ea2b219d71de0b847db4ae139eaba04d5a0612806978ab6b61b38b6fd7929
SHA5127f5e694c4562307f4e1745657a3f9372453b163d82d25bba0758f1cad34a95712d9398c4c49df808414bae7080a0c2620dc8e608aa460df6fea51094f1347a56