Analysis
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max time kernel
91s -
max time network
144s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
10-01-2023 18:47
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-en
General
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Target
file.exe
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Size
1.1MB
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MD5
6b5b0beb0a65c416b891580909d1faf9
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SHA1
7f9f5e3f24cab100bd29b8d40f4da2ef60eb3e88
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SHA256
33554adbd4585bfbe2946e22399a0333451a30631d5915854d049bd54bfd9fd4
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SHA512
fa95cee74e457b2639c1a8a28df746f171afafe521e6d6dfe2fdee025edd81f81e182585297b53463484279f544df951e46bf979017fa103a5d1c854fcf7971e
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SSDEEP
24576:R20SuvLDy4HBbCfOxasSfzsWMCTD0I3nSyL0FUSkl5l/Hld:R2yeGxasmoWzTwnSl5V
Malware Config
Extracted
nymaim
45.139.105.171
85.31.46.167
Signatures
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Executes dropped EXE 3 IoCs
Processes:
file.tmpKitFiles136.exeuxcLtOH57K.exepid process 1336 file.tmp 668 KitFiles136.exe 3440 uxcLtOH57K.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
KitFiles136.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation KitFiles136.exe -
Loads dropped DLL 1 IoCs
Processes:
file.tmppid process 1336 file.tmp -
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 17 IoCs
Processes:
file.tmpdescription ioc process File created C:\Program Files (x86)\Split Files\language\is-QGOQR.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-3PELN.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-QB640.tmp file.tmp File opened for modification C:\Program Files (x86)\Split Files\unins000.dat file.tmp File opened for modification C:\Program Files (x86)\Split Files\KitFiles136.exe file.tmp File created C:\Program Files (x86)\Split Files\is-VH4AK.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-CNI3N.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-CRO9I.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-7VIB1.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-36K09.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-6TI0M.tmp file.tmp File created C:\Program Files (x86)\Split Files\unins000.dat file.tmp File created C:\Program Files (x86)\Split Files\is-QVAUU.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-NBTDA.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-N947H.tmp file.tmp File created C:\Program Files (x86)\Split Files\language\is-0GQFB.tmp file.tmp File created C:\Program Files (x86)\Split Files\is-9QQ2B.tmp file.tmp -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 4956 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
KitFiles136.exepid process 668 KitFiles136.exe 668 KitFiles136.exe 668 KitFiles136.exe 668 KitFiles136.exe 668 KitFiles136.exe 668 KitFiles136.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
taskkill.exedescription pid process Token: SeDebugPrivilege 4956 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
file.exefile.tmpKitFiles136.execmd.exedescription pid process target process PID 4988 wrote to memory of 1336 4988 file.exe file.tmp PID 4988 wrote to memory of 1336 4988 file.exe file.tmp PID 4988 wrote to memory of 1336 4988 file.exe file.tmp PID 1336 wrote to memory of 668 1336 file.tmp KitFiles136.exe PID 1336 wrote to memory of 668 1336 file.tmp KitFiles136.exe PID 1336 wrote to memory of 668 1336 file.tmp KitFiles136.exe PID 668 wrote to memory of 3440 668 KitFiles136.exe uxcLtOH57K.exe PID 668 wrote to memory of 3440 668 KitFiles136.exe uxcLtOH57K.exe PID 668 wrote to memory of 3440 668 KitFiles136.exe uxcLtOH57K.exe PID 668 wrote to memory of 1076 668 KitFiles136.exe cmd.exe PID 668 wrote to memory of 1076 668 KitFiles136.exe cmd.exe PID 668 wrote to memory of 1076 668 KitFiles136.exe cmd.exe PID 1076 wrote to memory of 4956 1076 cmd.exe taskkill.exe PID 1076 wrote to memory of 4956 1076 cmd.exe taskkill.exe PID 1076 wrote to memory of 4956 1076 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4988 -
C:\Users\Admin\AppData\Local\Temp\is-31IIL.tmp\file.tmp"C:\Users\Admin\AppData\Local\Temp\is-31IIL.tmp\file.tmp" /SL5="$9005E,879518,51712,C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1336 -
C:\Program Files (x86)\Split Files\KitFiles136.exe"C:\Program Files (x86)\Split Files\KitFiles136.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:668 -
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\uxcLtOH57K.exe4⤵
- Executes dropped EXE
PID:3440 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /im "KitFiles136.exe" /f & erase "C:\Program Files (x86)\Split Files\KitFiles136.exe" & exit4⤵
- Suspicious use of WriteProcessMemory
PID:1076 -
C:\Windows\SysWOW64\taskkill.exetaskkill /im "KitFiles136.exe" /f5⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:4956
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.6MB
MD5fb9d5ab24fe32950c834e3c758061fd2
SHA17f349e5e22f94205fa076c34a16f861ec0e9ea78
SHA2560de820c108b5dc131afff4fe433099d924179d0a280334db56481ff2251cfa85
SHA5125158821a73ce06a542c964d1b98cbfdea9984aca5782a5164c0bcd7be8ad2155ecd2ab91129d01f1c2e5bac071035edaa07f920d7b29fbc6772750abb4929da2
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Filesize
1.6MB
MD5fb9d5ab24fe32950c834e3c758061fd2
SHA17f349e5e22f94205fa076c34a16f861ec0e9ea78
SHA2560de820c108b5dc131afff4fe433099d924179d0a280334db56481ff2251cfa85
SHA5125158821a73ce06a542c964d1b98cbfdea9984aca5782a5164c0bcd7be8ad2155ecd2ab91129d01f1c2e5bac071035edaa07f920d7b29fbc6772750abb4929da2
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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Filesize
692KB
MD5011df348d33aeb3103be711e7aaad000
SHA1eff06d4777d24ab7c2384737b846b7df7c9dd5ae
SHA2564f50389dd834b3268fcc673f791d82a61142eeb7baaa54a03668516df18507ef
SHA512e4b76ac1058880a8ba633f0ff37657594a92231cc6093b80dc6c3617d3edd045f1a3592c2b04cf5acbdbb599d2e4b9e079a47e92692912f4f0d7d189dd14b375
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
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Filesize
72KB
MD53fb36cb0b7172e5298d2992d42984d06
SHA1439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA25627ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
SHA5126b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c