cryptbot | ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2022 02:41

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General

Target

ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe
Size

4.2MB
MD5

9a111da409acb04e0aead5b1ad4aa204
SHA1

86a8b8f8c8e152de3804f38811279cd1e96aae0c
SHA256

ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7
SHA512

f818a5403452b7d3965e387eb24af2f9a367baf4d247b67d13d5ca5a7132e9e412326f2c55d09ed7bd2c36aecb735cc5efcb346756117cae53d345512a59b121

Score

10^/10

cryptbot discovery evasion spyware stealer suricata

Malware Config

Signatures

CryptBot
A C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot
suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)
suricata: ET MALWARE Single char EXE direct download likely trojan (multiple families)
suricata

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

Download.exeDowloadX.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	Download.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	DowloadX.exe

Blocklisted process makes network request 3 IoCs

Processes:

CScript.exe

flow pid process

2 4452 CScript.exe
4 4452 CScript.exe
6 4452 CScript.exe
Executes dropped EXE 2 IoCs

Processes:

Download.exeDowloadX.exe

pid process

4204 Download.exe
4128 DowloadX.exe

flow	pid	process
2	4452	CScript.exe
4	4452	CScript.exe
6	4452	CScript.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

DowloadX.exeDownload.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	DowloadX.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	DowloadX.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Download.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	Download.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

Processes:

DowloadX.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation DowloadX.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	DowloadX.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

DowloadX.exeDownload.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Wine	DowloadX.exe
Key opened	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Wine	Download.exe

Loads dropped DLL 2 IoCs

Processes:

ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe

pid	process
1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe
1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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

7 ip-api.com
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

Download.exeDowloadX.exe

pid process

4204 Download.exe
4128 DowloadX.exe

flow	ioc
7	ip-api.com

Drops file in Program Files directory 3 IoCs

Processes:

ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe

description	ioc	process
File created	C:\Program Files (x86)\Lass\Inst\DowloadX.exe	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe
File created	C:\Program Files (x86)\Lass\Inst\Download.exe	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe
File created	C:\Program Files (x86)\Lass\Inst\ipras.vbs	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe

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

System Information Discovery
T1082

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:

Download.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	Download.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Download.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Download.exeDowloadX.exe

pid process

4204 Download.exe
4204 Download.exe
4128 DowloadX.exe
4128 DowloadX.exe

Suspicious use of FindShellTrayWindow 12 IoCs

Processes:

Download.exe

pid	process
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe
4204	Download.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe

description	pid	process	target process
PID 1376 wrote to memory of 4204	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	Download.exe
PID 1376 wrote to memory of 4204	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	Download.exe
PID 1376 wrote to memory of 4204	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	Download.exe
PID 1376 wrote to memory of 4452	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	CScript.exe
PID 1376 wrote to memory of 4452	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	CScript.exe
PID 1376 wrote to memory of 4452	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	CScript.exe
PID 1376 wrote to memory of 4128	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	DowloadX.exe
PID 1376 wrote to memory of 4128	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	DowloadX.exe
PID 1376 wrote to memory of 4128	1376	ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe	DowloadX.exe

C:\Users\Admin\AppData\Local\Temp\ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe
"C:\Users\Admin\AppData\Local\Temp\ac39195bc9a3f97ab72f608ba7e86c79b9de337862e290d7d00ba5e0aaf23ac7.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1376

C:\Program Files (x86)\Lass\Inst\Download.exe
"C:\Program Files (x86)\Lass\Inst\Download.exe"
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
PID:4204

C:\Windows\SysWOW64\CScript.exe
"C:\Windows\system32\CScript.exe" "C:\Program Files (x86)\Lass\Inst\ipras.vbs" //e:vbscript //B //NOLOGO
2⤵
- Blocklisted process makes network request
PID:4452

C:\Program Files (x86)\Lass\Inst\DowloadX.exe
"C:\Program Files (x86)\Lass\Inst\DowloadX.exe"
2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks computer location settings
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:4128

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Web Service

T1102

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Lass\Inst\DowloadX.exe
Filesize
2.1MB

MD5
e6964640c38b37d47d1af6f62d84293d

SHA1
5fb66c1612d6931f5b9411ac697225812783b18b

SHA256
ae93c138b8c1e7b3af5853244f1bd81d723b4bdd487caf00fb47e308d324798e

SHA512
8178e081f63d403702c117b8b6bbf46f437e11d553e7ac0fa4a65e7bbd73a8d3a4026799283edfaf4c7b78d0ffbbd30f69ede60af8306238643d65fd86d89e99

Download Submit
C:\Program Files (x86)\Lass\Inst\Download.exe
Filesize
2.1MB

MD5
4cd4a697f1f93ab36d37c39c09a889e7

SHA1
b434186b165d0bd1a1b9169aef3bf04644c34b78

SHA256
6fbec75c90bd2c0ea247d7d21978ed1af82e706f9f2f0b579f7077e35fc16ec0

SHA512
f0feff6abe140656c42536c9761c85625d62956adccd6a8075aa95c5ef06247970a42ad1c6065237198ab72a5915a86a14d960c1ed9593d34881f69d2f7429f9

Download Submit
C:\Program Files (x86)\Lass\Inst\Download.exe
Filesize
2.1MB

MD5
4cd4a697f1f93ab36d37c39c09a889e7

SHA1
b434186b165d0bd1a1b9169aef3bf04644c34b78

SHA256
6fbec75c90bd2c0ea247d7d21978ed1af82e706f9f2f0b579f7077e35fc16ec0

SHA512
f0feff6abe140656c42536c9761c85625d62956adccd6a8075aa95c5ef06247970a42ad1c6065237198ab72a5915a86a14d960c1ed9593d34881f69d2f7429f9

Download Submit
C:\Program Files (x86)\Lass\Inst\ipras.vbs
Filesize
126B

MD5
b802ff9244875f69db2fae0f78e92b10

SHA1
49385a89cd575894a29fbda969b99cc1f5cf8076

SHA256
a1b0cb16fb2ecd66fccf156024404801ad694056e8a596326c1b27b57d8eabe8

SHA512
609856415a7ae2b3e260f945f1c8a8d2a28884c202d37181bea948708918f24b42ae03f17dba1520fddc91b2f7a182b0b8f885f33ea6f81bb3ee4c72e4e9350e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsaF907.tmp\UAC.dll
Filesize
14KB

MD5
adb29e6b186daa765dc750128649b63d

SHA1
160cbdc4cb0ac2c142d361df138c537aa7e708c9

SHA256
2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

SHA512
b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsaF907.tmp\nsExec.dll
Filesize
6KB

MD5
132e6153717a7f9710dcea4536f364cd

SHA1
e39bc82c7602e6dd0797115c2bd12e872a5fb2ab

SHA256
d29afce2588d8dd7bb94c00ca91cac0e85b80ffa6b221f5ffcb83a2497228eb2

SHA512
9aeb0b3051ce07fb9f03dfee7cea4a5e423425e48cb538173bd2a167817f867a30bd4d27d07875f27ca00031745b24547030b7f146660b049fa717590f1c77e1

Download Submit
memory/4128-142-0x0000000000000000-mapping.dmp

Download
memory/4128-144-0x0000000000400000-0x0000000000933000-memory.dmp

Filesize
5.2MB

Download
memory/4128-151-0x0000000000400000-0x0000000000933000-memory.dmp

Filesize
5.2MB

Download
memory/4128-150-0x0000000000400000-0x0000000000933000-memory.dmp

Filesize
5.2MB

Download
memory/4128-146-0x0000000000400000-0x0000000000933000-memory.dmp

Filesize
5.2MB

Download
memory/4128-145-0x0000000077C10000-0x0000000077DB3000-memory.dmp

Filesize
1.6MB

Download
memory/4204-148-0x0000000077C10000-0x0000000077DB3000-memory.dmp

Filesize
1.6MB

Download
memory/4204-133-0x0000000000000000-mapping.dmp

Download
memory/4204-147-0x0000000000A50000-0x0000000000F27000-memory.dmp

Filesize
4.8MB

Download
memory/4204-139-0x0000000000A50000-0x0000000000F27000-memory.dmp

Filesize
4.8MB

Download
memory/4204-149-0x0000000000A50000-0x0000000000F27000-memory.dmp

Filesize
4.8MB

Download
memory/4204-141-0x0000000000A50000-0x0000000000F27000-memory.dmp

Filesize
4.8MB

Download
memory/4204-140-0x0000000077C10000-0x0000000077DB3000-memory.dmp

Filesize
1.6MB

Download
memory/4452-136-0x0000000000000000-mapping.dmp

Download