d44d20adff5359504bb9aeeca5fc1ac855aa374eea0921b0990a41b8d0d777da

Analysis

max time kernel
243s
max time network
245s
platform
windows7_x64
resource
win7v20210408
submitted
04-05-2021 13:46

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General

Target

911.exe
Size

1.8MB
MD5

59df63df48d34fc9d3d9be42e76f6794
SHA1

853952f4a4bfdc0ea2885c766e544370489e683a
SHA256

d44d20adff5359504bb9aeeca5fc1ac855aa374eea0921b0990a41b8d0d777da
SHA512

63b58d35066d11b9e37547dc1dfae084fc679c7354f7623e5e93646a4e897c82ae2d4ef7550b9157c360d217e897d90cbd0e1d1274b308e39d8da26083d08c04

Score

5^/10

Malware Config

Signatures

Suspicious use of NtSetInformationThreadHideFromDebugger 11 IoCs

Processes:

911.exe

pid process

1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
1632 911.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2000 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

911.exe

pid process

1632 911.exe
1632 911.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

911.exe

description pid process

Token: SeDebugPrivilege 1632 911.exe

pid	process
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe
1632	911.exe

pid	process
2000	timeout.exe

pid	process
1632	911.exe
1632	911.exe

description	pid	process
Token: SeDebugPrivilege	1632	911.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

911.execmd.exe

description	pid	process	target process
PID 1632 wrote to memory of 1112	1632	911.exe	cmd.exe
PID 1632 wrote to memory of 1112	1632	911.exe	cmd.exe
PID 1632 wrote to memory of 1112	1632	911.exe	cmd.exe
PID 1632 wrote to memory of 1112	1632	911.exe	cmd.exe
PID 1112 wrote to memory of 2000	1112	cmd.exe	timeout.exe
PID 1112 wrote to memory of 2000	1112	cmd.exe	timeout.exe
PID 1112 wrote to memory of 2000	1112	cmd.exe	timeout.exe
PID 1112 wrote to memory of 2000	1112	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\911.exe
"C:\Users\Admin\AppData\Local\Temp\911.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:1112

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:2000

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1112-62-0x0000000000000000-mapping.dmp

Download
memory/1632-59-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/1632-61-0x00000000004D0000-0x000000000050D000-memory.dmp

Filesize
244KB

Download
memory/1632-64-0x0000000006040000-0x0000000006041000-memory.dmp

Filesize
4KB

Download
memory/2000-63-0x0000000000000000-mapping.dmp

Download