46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
151s
max time network
115s
platform
windows7_x64
resource
win7v200722
submitted
11-08-2020 12:30

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General

Target

foo/5bc72a1ae433663758319d97917b77ea.exe

Score

8^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

nsqE5BE.tmp.exe

pid process

740 nsqE5BE.tmp.exe
Loads dropped DLL 2 IoCs

Processes:

5bc72a1ae433663758319d97917b77ea.exe

pid process

1468 5bc72a1ae433663758319d97917b77ea.exe
1468 5bc72a1ae433663758319d97917b77ea.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

nsqE5BE.tmp.exe

description ioc process

File opened for modification \??\PhysicalDrive0 nsqE5BE.tmp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

5bc72a1ae433663758319d97917b77ea.exe

pid process

1468 5bc72a1ae433663758319d97917b77ea.exe

pid	process
740	nsqE5BE.tmp.exe

pid	process
1468	5bc72a1ae433663758319d97917b77ea.exe
1468	5bc72a1ae433663758319d97917b77ea.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	nsqE5BE.tmp.exe

pid	process
1468	5bc72a1ae433663758319d97917b77ea.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

5bc72a1ae433663758319d97917b77ea.exe

description	pid	process	target process
PID 1468 wrote to memory of 740	1468	5bc72a1ae433663758319d97917b77ea.exe	nsqE5BE.tmp.exe
PID 1468 wrote to memory of 740	1468	5bc72a1ae433663758319d97917b77ea.exe	nsqE5BE.tmp.exe
PID 1468 wrote to memory of 740	1468	5bc72a1ae433663758319d97917b77ea.exe	nsqE5BE.tmp.exe
PID 1468 wrote to memory of 740	1468	5bc72a1ae433663758319d97917b77ea.exe	nsqE5BE.tmp.exe

C:\Users\Admin\AppData\Local\Temp\foo\5bc72a1ae433663758319d97917b77ea.exe
"C:\Users\Admin\AppData\Local\Temp\foo\5bc72a1ae433663758319d97917b77ea.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1468

C:\Users\Admin\AppData\Local\Temp\nsqE5BE.tmp.exe
"C:\Users\Admin\AppData\Local\Temp\nsqE5BE.tmp.exe" -CalendarInstalled
2⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
PID:740

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

T1067

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

C:\Users\Admin\AppData\Local\Temp\nsqE5BE.tmp.exe
MD5
2b47f8164ec98ec587dbf78740f911ca

SHA1
befa9fe2dd21aa5138b4065a54a443cc692053f7

SHA256
7bab4e3aaa1e1573f6bbddd2e6fa1a2e1c8e053b6195cfd0106c2ec5ce61dde6

SHA512
4baa8e6beaa68e282cb386c1d645d23c14103c76a07e4ae45bf1c619561b126c487390a739464158f295efb853cf784e86668d7514c81b0fe9411318842e2e1f

Download Submit
\Users\Admin\AppData\Local\Temp\nsaE511.tmp\System.dll
MD5
bf712f32249029466fa86756f5546950

SHA1
75ac4dc4808ac148ddd78f6b89a51afbd4091c2e

SHA256
7851cb12fa4131f1fee5de390d650ef65cac561279f1cfe70ad16cc9780210af

SHA512
13f69959b28416e0b8811c962a49309dca3f048a165457051a28a3eb51377dcaf99a15e86d7eee8f867a9e25ecf8c44da370ac8f530eeae7b5252eaba64b96f4

Download Submit
\Users\Admin\AppData\Local\Temp\nsqE5BE.tmp.exe
MD5
2b47f8164ec98ec587dbf78740f911ca

SHA1
befa9fe2dd21aa5138b4065a54a443cc692053f7

SHA256
7bab4e3aaa1e1573f6bbddd2e6fa1a2e1c8e053b6195cfd0106c2ec5ce61dde6

SHA512
4baa8e6beaa68e282cb386c1d645d23c14103c76a07e4ae45bf1c619561b126c487390a739464158f295efb853cf784e86668d7514c81b0fe9411318842e2e1f

Download Submit
memory/740-2-0x0000000000000000-mapping.dmp

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