4c269e43d99dbd557bd75b79ddf1ca143d006de9b096936403e75b1178751f66

Resubmissions

07-09-2021 18:08

210907-wq7rdadba9 10

07-09-2021 17:57

210907-wjxylagcfn 10

Analysis

max time kernel
874s
max time network
1588s
platform
windows11_x64
resource
win11
submitted
07-09-2021 18:08

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General

Target

keygen-step-6.exe
Size

267KB
MD5

093bc5ebd2d2a39d84c1d35fbd2d9efa
SHA1

e028ca17fe2c7cbf7ad234b28cd50ad2c7c440e5
SHA256

ee2994ea7f202516db816f85f23aac0a13ec32743d0555f81d68568bb40f4811
SHA512

da58e87b099d520f02715ffcf6b50e2a586b6baec5b64d5ee39fb4c4a81ee9b8c18c8e341ee8befcf9048088661d7f182a937a7948aacfac926f1710fa77bcfa

Score

6^/10

Malware Config

Signatures

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

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

System Information Discovery
T1082

flow	ioc
3	ip-api.com

Modifies data under HKEY_USERS 43 IoCs

Processes:

sihclient.exesvchost.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	sihclient.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Classes\Local Settings\MuiCache\7\52C64B7E	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	sihclient.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Classes\Local Settings\MuiCache	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	sihclient.exe
Key created	\REGISTRY\USER\S-1-5-19\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	sihclient.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	sihclient.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1440 PING.EXE

pid	process
1440	PING.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

keygen-step-6.execmd.exe

description	pid	process	target process
PID 2412 wrote to memory of 572	2412	keygen-step-6.exe	cmd.exe
PID 2412 wrote to memory of 572	2412	keygen-step-6.exe	cmd.exe
PID 2412 wrote to memory of 572	2412	keygen-step-6.exe	cmd.exe
PID 572 wrote to memory of 1440	572	cmd.exe	PING.EXE
PID 572 wrote to memory of 1440	572	cmd.exe	PING.EXE
PID 572 wrote to memory of 1440	572	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe
"C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2412

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c ping 127.0.0.1 && del "C:\Users\Admin\AppData\Local\Temp\keygen-step-6.exe" >> NUL
2⤵
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1
3⤵
- Runs ping.exe
PID:1440

C:\Windows\System32\sihclient.exe
C:\Windows\System32\sihclient.exe /cv bIwyp2o330q1fggh9KFnew.0.2
1⤵
- Modifies data under HKEY_USERS
PID:5056

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS
1⤵
- Modifies data under HKEY_USERS
PID:4192

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV
1⤵
PID:3064

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Remote System Discovery

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

memory/572-159-0x0000000000000000-mapping.dmp

Download
memory/1440-160-0x0000000000000000-mapping.dmp

Download
memory/2412-146-0x0000000000DE0000-0x0000000000DF8000-memory.dmp

Filesize
96KB

Download
memory/4192-150-0x0000026BE7270000-0x0000026BE7280000-memory.dmp

Filesize
64KB

Download
memory/4192-151-0x0000026BE72F0000-0x0000026BE7300000-memory.dmp

Filesize
64KB

Download
memory/4192-152-0x0000026BE98F0000-0x0000026BE98F4000-memory.dmp

Filesize
16KB

Download
memory/4192-153-0x0000026BE9BE0000-0x0000026BE9BE4000-memory.dmp

Filesize
16KB

Download
memory/4192-154-0x0000026BE9BA0000-0x0000026BE9BA1000-memory.dmp

Filesize
4KB

Download
memory/4192-155-0x0000026BE9920000-0x0000026BE9924000-memory.dmp

Filesize
16KB

Download
memory/4192-156-0x0000026BE9910000-0x0000026BE9911000-memory.dmp

Filesize
4KB

Download
memory/4192-157-0x0000026BE9910000-0x0000026BE9914000-memory.dmp

Filesize
16KB

Download
memory/4192-158-0x0000026BE75F0000-0x0000026BE75F1000-memory.dmp

Filesize
4KB

Download