d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69

General

Target

d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe
Size

45KB
MD5

8288eb7f69159a7fa067e3c737e9c1b0
SHA1

9f1a33e216a870a217467291c290a3840e89afd5
SHA256

d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69
SHA512

c1edbe7ea6ea0e96bc2a529b2f155b5d903f0ee27b1ffa05fa7b977f89f3a1400a2045e99ba0c55ed51f77839d5bc9629f83a24e224b823d909ca84d313de943
SSDEEP

768:5/yHQteXjNT+moSaMf0Y82+fPaLANArOGpldbx/hrwGdr:ZyHQETNymPnOasNAtdJhPr

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1976	caycwq.exe

Deletes itself 1 IoCs

pid	Process
1136	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
1976	caycwq.exe

Enumerates connected drives 3 TTPs 22 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\I:	caycwq.exe
File opened (read-only)	\??\J:	caycwq.exe
File opened (read-only)	\??\P:	caycwq.exe
File opened (read-only)	\??\R:	caycwq.exe
File opened (read-only)	\??\T:	caycwq.exe
File opened (read-only)	\??\F:	caycwq.exe
File opened (read-only)	\??\O:	caycwq.exe
File opened (read-only)	\??\Q:	caycwq.exe
File opened (read-only)	\??\U:	caycwq.exe
File opened (read-only)	\??\Y:	caycwq.exe
File opened (read-only)	\??\X:	caycwq.exe
File opened (read-only)	\??\Z:	caycwq.exe
File opened (read-only)	\??\E:	caycwq.exe
File opened (read-only)	\??\G:	caycwq.exe
File opened (read-only)	\??\K:	caycwq.exe
File opened (read-only)	\??\S:	caycwq.exe
File opened (read-only)	\??\V:	caycwq.exe
File opened (read-only)	\??\W:	caycwq.exe
File opened (read-only)	\??\H:	caycwq.exe
File opened (read-only)	\??\L:	caycwq.exe
File opened (read-only)	\??\M:	caycwq.exe
File opened (read-only)	\??\N:	caycwq.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\caycwq.exe	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe
File opened for modification	C:\Windows\SysWOW64\caycwq.exe	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe
File created	C:\Windows\SysWOW64\hra33.dll	caycwq.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\lpk.dll	caycwq.exe
File opened for modification	C:\Program Files\7-Zip\lpk.dll	caycwq.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	caycwq.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	caycwq.exe

Kills process with taskkill 2 IoCs

evasion

pid	Process
1932	taskkill.exe
612	taskkill.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe
Token: SeDebugPrivilege	1932	taskkill.exe
Token: SeDebugPrivilege	612	taskkill.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1440 wrote to memory of 1932	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	28
PID 1440 wrote to memory of 1932	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	28
PID 1440 wrote to memory of 1932	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	28
PID 1440 wrote to memory of 1932	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	28
PID 1976 wrote to memory of 612	1976	caycwq.exe	31
PID 1976 wrote to memory of 612	1976	caycwq.exe	31
PID 1976 wrote to memory of 612	1976	caycwq.exe	31
PID 1976 wrote to memory of 612	1976	caycwq.exe	31
PID 1440 wrote to memory of 1136	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	33
PID 1440 wrote to memory of 1136	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	33
PID 1440 wrote to memory of 1136	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	33
PID 1440 wrote to memory of 1136	1440	d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe	33

C:\Users\Admin\AppData\Local\Temp\d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe
"C:\Users\Admin\AppData\Local\Temp\d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1440
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /t /im KSafeTray.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:1932
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\D9BF59~1.EXE > nul
  2⤵
  - Deletes itself
  PID:1136

C:\Windows\SysWOW64\caycwq.exe
C:\Windows\SysWOW64\caycwq.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Enumerates connected drives
- Drops file in System32 directory
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\taskkill.exe
  taskkill /f /t /im KSafeTray.exe
  2⤵
  - Kills process with taskkill
  - Suspicious use of AdjustPrivilegeToken
  PID:612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\caycwq.exe

Filesize
45KB

MD5
8288eb7f69159a7fa067e3c737e9c1b0

SHA1
9f1a33e216a870a217467291c290a3840e89afd5

SHA256
d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69

SHA512
c1edbe7ea6ea0e96bc2a529b2f155b5d903f0ee27b1ffa05fa7b977f89f3a1400a2045e99ba0c55ed51f77839d5bc9629f83a24e224b823d909ca84d313de943

Download Submit
C:\Windows\SysWOW64\caycwq.exe

Filesize
45KB

MD5
8288eb7f69159a7fa067e3c737e9c1b0

SHA1
9f1a33e216a870a217467291c290a3840e89afd5

SHA256
d9bf5969d5d6d3d45389be25e4d68b3cd5aab743d51de4e0476eec63f033ee69

SHA512
c1edbe7ea6ea0e96bc2a529b2f155b5d903f0ee27b1ffa05fa7b977f89f3a1400a2045e99ba0c55ed51f77839d5bc9629f83a24e224b823d909ca84d313de943

Download Submit
\Windows\SysWOW64\hra33.dll

Filesize
53KB

MD5
d9443291d702f85bab0c44412f0a8d0b

SHA1
892365908c27ef5970534e283cec871df9f6c574

SHA256
fba1639a873cb55a30cfed814d2ed7d8bdd6e01d445f92833101d74245da90ba

SHA512
9fc658862c38e8c2133fa2fb98d72f5a1811105512eb42a96e5d573ad0a7d18a43364e95f4f1cfd690a881f6740b7d3fb66a8674e3766da1e042e8d4164faa93

Download Submit
memory/1440-54-0x0000000076181000-0x0000000076183000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads