cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7

Analysis

max time kernel
128s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2022 23:00

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General

Target

cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
Size

10KB
MD5

9e62a82709d4df9afbe188b2c645e8db
SHA1

d73c739f4158c0c640d21d54d4bd8e19d281bc38
SHA256

cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7
SHA512

584e5f087eb5e339941ab64cb87f15c36e70df894ba10e15a678295945e65d70223d77bdee21d8a5e9129fdbf69d89827177266f46b20c3b2d6f9a332c0d6048
SSDEEP

192:RuWsSXm7DcyUjOEa5MAFiiGDevnXgeiUIwIGmMe4p53qaI+R1F12IA2eG4sGjZrD:RuWtmPcyUjHa57sMvnXzIJGmF0AbzZ3P

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3068	DC6E922C.EXE

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\55226BF8\ImagePath = "C:\\Windows\\system32\\DC6E922C.EXE -d"	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe

Drops file in System32 directory 33 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_custom_stream.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_1920.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_wide_alternate.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_768.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_wide.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_256.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_1920.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_2560.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\DC6E922C.EXE	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_idx.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_1280.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_48.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_96.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_exif.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_idx.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_1280.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_sr.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_96.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_256.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_768.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_wide.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_32.db	DC6E922C.EXE
File created	C:\Windows\SysWOW64\DC6E922C.EXE	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_32.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_exif.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_wide_alternate.db	DC6E922C.EXE
File created	C:\Windows\SysWOW64\DC6E922C.EXE	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_16.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_16.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\iconcache_custom_stream.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_48.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_2560.db	DC6E922C.EXE
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Explorer\thumbcache_sr.db	DC6E922C.EXE

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64	DC6E922C.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies data under HKEY_USERS 12 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer	DC6E922C.EXE
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\TelemetrySalt = "2"	DC6E922C.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager	DC6E922C.EXE
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000\Owner = fc0b00009c443044c5cbd801	DC6E922C.EXE
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000\Sequence = "1"	DC6E922C.EXE
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000\RegFilesHash = 3ba8a7677b94a705796eaa547720f30ac8ac924aa697265cc7f44d5ecb3f1218	DC6E922C.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000	DC6E922C.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software	DC6E922C.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	DC6E922C.EXE
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000\SessionHash = 9be707962a2da5e36d7316acee08dc415dd89ddbdb18abeddfcf2d1a95599af0	DC6E922C.EXE
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000\RegFiles0000 = 43003a005c00570069006e0064006f00770073005c00530079007300740065006d003300320000000000	DC6E922C.EXE
Key deleted	\REGISTRY\USER\.DEFAULT\Software\Microsoft\RestartManager\Session0000	DC6E922C.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
3068	DC6E922C.EXE
3068	DC6E922C.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
3068	DC6E922C.EXE
3068	DC6E922C.EXE
3068	DC6E922C.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 2708	2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe	81
PID 2620 wrote to memory of 2708	2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe	81
PID 2620 wrote to memory of 2708	2620	cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe	81

C:\Users\Admin\AppData\Local\Temp\cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe
"C:\Users\Admin\AppData\Local\Temp\cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7.exe"
1⤵
- Sets service image path in registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\CFD5CB~1.EXE > nul
  2⤵
  PID:2708

C:\Windows\SysWOW64\DC6E922C.EXE
C:\Windows\SysWOW64\DC6E922C.EXE -d
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:3068

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\DC6E922C.EXE

Filesize
10KB

MD5
9e62a82709d4df9afbe188b2c645e8db

SHA1
d73c739f4158c0c640d21d54d4bd8e19d281bc38

SHA256
cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7

SHA512
584e5f087eb5e339941ab64cb87f15c36e70df894ba10e15a678295945e65d70223d77bdee21d8a5e9129fdbf69d89827177266f46b20c3b2d6f9a332c0d6048

Download Submit
C:\Windows\SysWOW64\DC6E922C.EXE

Filesize
10KB

MD5
9e62a82709d4df9afbe188b2c645e8db

SHA1
d73c739f4158c0c640d21d54d4bd8e19d281bc38

SHA256
cfd5cb0235efa4d4b562b923523fec711983b69107c51d5d3214b5a8f21b7df7

SHA512
584e5f087eb5e339941ab64cb87f15c36e70df894ba10e15a678295945e65d70223d77bdee21d8a5e9129fdbf69d89827177266f46b20c3b2d6f9a332c0d6048

Download Submit