cb5892e66ce5c2e7b5ab9946e77e1e634fdc5588a729ad6fdaaa4fd822f27051

General

Target

server.exe
Size

56KB
MD5

f1df8c367943c17dfebdd15b127e33e7
SHA1

fe898d4f2cf5b793368a071e9f9590cd4cc4e2ef
SHA256

f9db82c372cf49d7adfeb19deb46a8f291cccd255acd7402d8bd8188eec85a18
SHA512

55ca309b55da46a1a27962d477524bc8cbdd929583b716725efa425ea775aba7f8a4c2c7a798c9a3897ee50bf183ceed8ee5a4c7288f16d361ef4926252535ef
SSDEEP

768:QUuzp0fg4fyRR5tHC4kt5Jp9k0FBxTJp8jSE5+Nk/QBeLPJbukgb4a:zfFYrHzmJcABxt2mE5OAkYJyz4a

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3388	123.exe

Sets DLL path for service in the 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\123\Parameters\ServiceDll = "C:\\Program Files (x86)\\Google\\240607953.dll"	server.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	server.exe

Loads dropped DLL 3 IoCs

pid	Process
1736	server.exe
3224	svchost.exe
3388	123.exe

Creates a Windows Service
persistence

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\123.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\123.exe	svchost.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Google\240607953.dll	server.exe

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4412	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe
1736	server.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1736	server.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1736	server.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2328	1736	server.exe	86
PID 1736 wrote to memory of 2328	1736	server.exe	86
PID 1736 wrote to memory of 2328	1736	server.exe	86
PID 2328 wrote to memory of 4412	2328	cmd.exe	88
PID 2328 wrote to memory of 4412	2328	cmd.exe	88
PID 2328 wrote to memory of 4412	2328	cmd.exe	88
PID 3224 wrote to memory of 3388	3224	svchost.exe	90
PID 3224 wrote to memory of 3388	3224	svchost.exe	90
PID 3224 wrote to memory of 3388	3224	svchost.exe	90

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
1⤵
- Sets DLL path for service in the registry
- Checks computer location settings
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2328
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:4412

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "123"
1⤵
PID:4316

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "123"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Windows\SysWOW64\123.exe
  C:\Windows\system32\123.exe "c:\program files (x86)\google\240607953.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3388

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Google\240607953.dll

Filesize
26KB

MD5
7584e503fa363f192940905470467f87

SHA1
212df83d88300008faef1730d14f7945930c6836

SHA256
b041bd2a32989f79b513e54bec057e6f5769eb00f95011ae1e7e487df407a913

SHA512
c4835b299d62a821cff5eae30809d26011838443e7fab554ab2884d7cf9e17a720ceb38086ccac09ee5f99ce1bc7ebdf1e11114960101fb56e010a97168568e5

Download Submit
C:\Program Files (x86)\Google\240607953.dll

Filesize
26KB

MD5
7584e503fa363f192940905470467f87

SHA1
212df83d88300008faef1730d14f7945930c6836

SHA256
b041bd2a32989f79b513e54bec057e6f5769eb00f95011ae1e7e487df407a913

SHA512
c4835b299d62a821cff5eae30809d26011838443e7fab554ab2884d7cf9e17a720ceb38086ccac09ee5f99ce1bc7ebdf1e11114960101fb56e010a97168568e5

Download Submit
C:\Program Files (x86)\Google\240607953.dll

Filesize
26KB

MD5
7584e503fa363f192940905470467f87

SHA1
212df83d88300008faef1730d14f7945930c6836

SHA256
b041bd2a32989f79b513e54bec057e6f5769eb00f95011ae1e7e487df407a913

SHA512
c4835b299d62a821cff5eae30809d26011838443e7fab554ab2884d7cf9e17a720ceb38086ccac09ee5f99ce1bc7ebdf1e11114960101fb56e010a97168568e5

Download Submit
C:\Windows\SysWOW64\123.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Windows\SysWOW64\123.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
\??\c:\program files (x86)\google\240607953.dll

Filesize
26KB

MD5
7584e503fa363f192940905470467f87

SHA1
212df83d88300008faef1730d14f7945930c6836

SHA256
b041bd2a32989f79b513e54bec057e6f5769eb00f95011ae1e7e487df407a913

SHA512
c4835b299d62a821cff5eae30809d26011838443e7fab554ab2884d7cf9e17a720ceb38086ccac09ee5f99ce1bc7ebdf1e11114960101fb56e010a97168568e5

Download Submit

Analysis

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