dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3

General

Target

dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe
Size

34KB
MD5

1d327d8c9b18bb7149d7d3395a508aab
SHA1

8c358af5a5da471c2a266bca08b88bc0465cbc18
SHA256

dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3
SHA512

d659be63c99ede00518e702763fe29b7853becc45433a017790bf84089d8a29d42b3d6d85684efed70392f6a446f7ea3bc55a2d998e15588534b3539306f420d
SSDEEP

768:W/H5FyHlSh9squ1AfNCGRlgOpNI7+fd/xfTHefirw5:yH5FyH0h9sgNCGbgOpNI7+fFJEi

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

caycwq.exe

pid process

1532 caycwq.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1304 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

caycwq.exe

pid process

1532 caycwq.exe

pid	process
1532	caycwq.exe

pid	process
1304	cmd.exe

pid	process
1532	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

Processes:

caycwq.exe

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

Drops file in System32 directory 3 IoCs

Processes:

dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.execaycwq.exe

description	ioc	process
File created	C:\Windows\SysWOW64\caycwq.exe	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe
File opened for modification	C:\Windows\SysWOW64\caycwq.exe	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe
File created	C:\Windows\SysWOW64\hra8.dll	caycwq.exe

Drops file in Program Files directory 2 IoCs

Processes:

caycwq.exe

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

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

Processes:

caycwq.exe

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe

description pid process

Token: SeIncBasePriorityPrivilege 1460 dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	1460	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe

description	pid	process	target process
PID 1460 wrote to memory of 1304	1460	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe	cmd.exe
PID 1460 wrote to memory of 1304	1460	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe	cmd.exe
PID 1460 wrote to memory of 1304	1460	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe	cmd.exe
PID 1460 wrote to memory of 1304	1460	dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe
"C:\Users\Admin\AppData\Local\Temp\dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1460

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\DD1BB3~1.EXE > nul
2⤵
- Deletes itself
PID:1304

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
PID:1532

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
34KB

MD5
1d327d8c9b18bb7149d7d3395a508aab

SHA1
8c358af5a5da471c2a266bca08b88bc0465cbc18

SHA256
dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3

SHA512
d659be63c99ede00518e702763fe29b7853becc45433a017790bf84089d8a29d42b3d6d85684efed70392f6a446f7ea3bc55a2d998e15588534b3539306f420d

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

Filesize
34KB

MD5
1d327d8c9b18bb7149d7d3395a508aab

SHA1
8c358af5a5da471c2a266bca08b88bc0465cbc18

SHA256
dd1bb3afbf96c822af8d5b8633e265621dc997a1e78e882f081124e255df59b3

SHA512
d659be63c99ede00518e702763fe29b7853becc45433a017790bf84089d8a29d42b3d6d85684efed70392f6a446f7ea3bc55a2d998e15588534b3539306f420d

Download Submit
\Windows\SysWOW64\hra8.dll

Filesize
43KB

MD5
c4fe291af01856a495db57a491bf0e32

SHA1
1724fed510813eb56179a33e00ca7e1d776fff95

SHA256
e7d911f45550b454c94b89517aea8836f1d2acd9b35d5b0286a163b27ac87d75

SHA512
856c1c4c98f21b9a1d60b8e4bfee80bb6dffbb3d2407a3b023a675fd698022e6bb720783ff9d03b4c5fb8b731d3fac9ff5bb297a2271d118c0233f4f440ca024

Download Submit
memory/1304-55-0x0000000000000000-mapping.dmp

Download
memory/1532-58-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads