Analysis
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max time kernel
151s -
max time network
155s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
11/10/2023, 20:37
Static task
static1
Behavioral task
behavioral1
Sample
kos1.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
kos1.exe
Resource
win10v2004-20230915-en
General
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Target
kos1.exe
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Size
1.4MB
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MD5
85b698363e74ba3c08fc16297ddc284e
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SHA1
171cfea4a82a7365b241f16aebdb2aad29f4f7c0
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SHA256
78efcbb0c6eb6a4c76c036adc65154b8ff028849f79d508e45babfb527cb7cfe
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SHA512
7e4816c43e0addba088709948e8aedc9e39d6802c74a75cfbc2a0e739b44c5b5eef2bb2453b7032c758b0bdb38e4e7a598aa29be015796361b81d7f9e8027796
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SSDEEP
24576:uS7LJeESj3RxrDKaWrnuzzBv7oV2Ev20sYoh9nhhM/vacAVoZFjo:T7LJqjr/KaWrn4Ev20m9h8ZF
Malware Config
Signatures
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Executes dropped EXE 5 IoCs
pid Process 2704 set16.exe 2884 kos.exe 2256 is-N2B1J.tmp 584 previewer.exe 2772 previewer.exe -
Loads dropped DLL 16 IoCs
pid Process 3020 kos1.exe 3020 kos1.exe 2704 set16.exe 2704 set16.exe 2704 set16.exe 2704 set16.exe 2256 is-N2B1J.tmp 2256 is-N2B1J.tmp 2256 is-N2B1J.tmp 2256 is-N2B1J.tmp 2256 is-N2B1J.tmp 584 previewer.exe 584 previewer.exe 2256 is-N2B1J.tmp 2772 previewer.exe 2772 previewer.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 7 IoCs
description ioc Process File created C:\Program Files (x86)\PA Previewer\is-9J5GD.tmp is-N2B1J.tmp File created C:\Program Files (x86)\PA Previewer\is-OTUT5.tmp is-N2B1J.tmp File created C:\Program Files (x86)\PA Previewer\is-CVNI7.tmp is-N2B1J.tmp File created C:\Program Files (x86)\PA Previewer\is-P0R5P.tmp is-N2B1J.tmp File opened for modification C:\Program Files (x86)\PA Previewer\unins000.dat is-N2B1J.tmp File opened for modification C:\Program Files (x86)\PA Previewer\previewer.exe is-N2B1J.tmp File created C:\Program Files (x86)\PA Previewer\unins000.dat is-N2B1J.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Runs net.exe
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Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2884 kos.exe Token: SeDebugPrivilege 584 previewer.exe Token: SeDebugPrivilege 2772 previewer.exe -
Suspicious use of WriteProcessMemory 46 IoCs
description pid Process procid_target PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2704 3020 kos1.exe 28 PID 3020 wrote to memory of 2884 3020 kos1.exe 29 PID 3020 wrote to memory of 2884 3020 kos1.exe 29 PID 3020 wrote to memory of 2884 3020 kos1.exe 29 PID 3020 wrote to memory of 2884 3020 kos1.exe 29 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2704 wrote to memory of 2256 2704 set16.exe 30 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 2172 2256 is-N2B1J.tmp 31 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2256 wrote to memory of 584 2256 is-N2B1J.tmp 33 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2172 wrote to memory of 2728 2172 net.exe 34 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35 PID 2256 wrote to memory of 2772 2256 is-N2B1J.tmp 35
Processes
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C:\Users\Admin\AppData\Local\Temp\kos1.exe"C:\Users\Admin\AppData\Local\Temp\kos1.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Users\Admin\AppData\Local\Temp\set16.exe"C:\Users\Admin\AppData\Local\Temp\set16.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2704 -
C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp"C:\Users\Admin\AppData\Local\Temp\is-2FL5K.tmp\is-N2B1J.tmp" /SL4 $90124 "C:\Users\Admin\AppData\Local\Temp\set16.exe" 1232936 522243⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2256 -
C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 84⤵
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 85⤵PID:2728
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-
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C:\Program Files (x86)\PA Previewer\previewer.exe"C:\Program Files (x86)\PA Previewer\previewer.exe" -i4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:584
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-
C:\Program Files (x86)\PA Previewer\previewer.exe"C:\Program Files (x86)\PA Previewer\previewer.exe" -s4⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:2772
-
-
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C:\Users\Admin\AppData\Local\Temp\kos.exe"C:\Users\Admin\AppData\Local\Temp\kos.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2884
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
647KB
MD52fba5642cbcaa6857c3995ccb5d2ee2a
SHA191fe8cd860cba7551fbf78bc77cc34e34956e8cc
SHA256ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa
SHA51230613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c
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Filesize
647KB
MD52fba5642cbcaa6857c3995ccb5d2ee2a
SHA191fe8cd860cba7551fbf78bc77cc34e34956e8cc
SHA256ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa
SHA51230613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c
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Filesize
8KB
MD5076ab7d1cc5150a5e9f8745cc5f5fb6c
SHA17b40783a27a38106e2cc91414f2bc4d8b484c578
SHA256d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90
SHA51275e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b
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Filesize
8KB
MD5076ab7d1cc5150a5e9f8745cc5f5fb6c
SHA17b40783a27a38106e2cc91414f2bc4d8b484c578
SHA256d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90
SHA51275e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
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Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
-
Filesize
1.9MB
MD527b85a95804a760da4dbee7ca800c9b4
SHA1f03136226bf3dd38ba0aa3aad1127ccab380197c
SHA256f98b98404ecf3871a10a290ade21ad77d0b2633f47247debc53d094b9bdff245
SHA512e760a15370272aa9541f1afceaaf4f5a8068dad21c6a8d50ebd01514e16bbc8f867c8af349080f3d1fa7a19eafe7cde74921d01716dea69ef801da1b74eae4a7
-
Filesize
647KB
MD52fba5642cbcaa6857c3995ccb5d2ee2a
SHA191fe8cd860cba7551fbf78bc77cc34e34956e8cc
SHA256ddec51f3741f3988b9cc792f6f8fc0dfa2098ef0eb84c6a2af7f8da5a72b40fa
SHA51230613b43427d17115134798506f197c0f5f8b2b9f247668fa25b9dd4853bbd97ac1e27f4e3325dec4f6dfc0e448ebbddb2969ad1a1781aa59ebf522d436aed7c
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
32KB
MD5b4786eb1e1a93633ad1b4c112514c893
SHA1734750b771d0809c88508e4feb788d7701e6dada
SHA2562ae4169f721beb389a661e6dbb18bc84ef38556af1f46807da9d87aec2a6f06f
SHA5120882d2aa163ece22796f837111db0d55158098035005e57cd2e9b8d59dc2e582207840bf98bee534b81c368acf60ab5d8ecbe762209273bda067a215cdb2c0c6
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
8KB
MD5076ab7d1cc5150a5e9f8745cc5f5fb6c
SHA17b40783a27a38106e2cc91414f2bc4d8b484c578
SHA256d1b71081d7ba414b589338329f278ba51c6ccf542d74f131f96c2337ee0a4c90
SHA51275e274a654e88feb0d66156f387bc5e420811f4f62939396a7455d12e835d7e134b2579ab59976c591b416d1ec1acdf05e9eb290c8f01383c6a50bf43854420b
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c
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Filesize
1.4MB
MD522d5269955f256a444bd902847b04a3b
SHA141a83de3273270c3bd5b2bd6528bdc95766aa268
SHA256ab16986253bd187e3134f27495ef0db4b648f769721bc8c84b708c7ba69156fd
SHA512d85ada5d8c2c02932a79241a484b088ba70bda0497fd8ad638300935a16841d7cbc8258be93055907cb533bc534fdd48c7c91109fa22f87e65a6b374cd51055c