cryptbot | 8e866375a8d49db2282a0ef0d38667b38ee10bcb23fd63692c65749fb3217f2d

Resubmissions

17-01-2021 17:06

210117-b4j8cr5ts6 10

16-01-2021 19:25

210116-s6gykrtqre 10

Analysis

max time kernel
150s
max time network
146s
platform
windows10_x64
resource
win10v20201028
submitted
17-01-2021 17:06

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General

Target

EbookReader2019.exe
Size

6.3MB
MD5

847c79e639fb34c2058728ca2fda7bd4
SHA1

7f1612cae512f41aa91fec27fab0dac73f65e4da
SHA256

8e866375a8d49db2282a0ef0d38667b38ee10bcb23fd63692c65749fb3217f2d
SHA512

05c5f5943a432c7e5080e8403d6ca1fa31ea1f47fb4820fed1ad14cd972caa7bb8f620500fa72fd4f66bba63820f6d1d984b6e370524e2ea71a0bf32688875bc

Score

10^/10

cryptbot discovery evasion spyware stealer

Malware Config

Signatures

CryptBot
A C++ stealer distributed widely in bundle with other software.
spyware stealer cryptbot
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Executes dropped EXE 2 IoCs

Processes:

1.exe2.exe

pid process

3144 1.exe
1680 2.exe

pid	process
3144	1.exe
1680	2.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:

1.exe2.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2.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:

1.exe2.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine	1.exe
Key opened	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Wine	2.exe

Loads dropped DLL 1 IoCs

Processes:

EbookReader2019.exe

pid process

644 EbookReader2019.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
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

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

Processes:

1.exe2.exe

pid process

3144 1.exe
1680 2.exe

pid	process
644	EbookReader2019.exe

flow	ioc
9	ip-api.com

pid	process
3144	1.exe
1680	2.exe

Drops file in Program Files directory 3 IoCs

Processes:

EbookReader2019.exe

description	ioc	process
File created	C:\Program Files (x86)\Margin\Marg\3.exe	EbookReader2019.exe
File created	C:\Program Files (x86)\Margin\Marg\1.exe	EbookReader2019.exe
File created	C:\Program Files (x86)\Margin\Marg\2.exe	EbookReader2019.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:

1.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	1.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	1.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2012 timeout.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

1.exe2.exe

pid process

3144 1.exe
3144 1.exe
1680 2.exe
1680 2.exe
Suspicious use of FindShellTrayWindow 12 IoCs

Processes:

1.exe

pid process

3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe
3144 1.exe

pid	process
2012	timeout.exe

pid	process
3144	1.exe
3144	1.exe
1680	2.exe
1680	2.exe

pid	process
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe
3144	1.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EbookReader2019.exe1.execmd.exe

description	pid	process	target process
PID 644 wrote to memory of 3144	644	EbookReader2019.exe	1.exe
PID 644 wrote to memory of 3144	644	EbookReader2019.exe	1.exe
PID 644 wrote to memory of 3144	644	EbookReader2019.exe	1.exe
PID 3144 wrote to memory of 3964	3144	1.exe	cmd.exe
PID 3144 wrote to memory of 3964	3144	1.exe	cmd.exe
PID 3144 wrote to memory of 3964	3144	1.exe	cmd.exe
PID 644 wrote to memory of 1680	644	EbookReader2019.exe	2.exe
PID 644 wrote to memory of 1680	644	EbookReader2019.exe	2.exe
PID 644 wrote to memory of 1680	644	EbookReader2019.exe	2.exe
PID 3964 wrote to memory of 2012	3964	cmd.exe	timeout.exe
PID 3964 wrote to memory of 2012	3964	cmd.exe	timeout.exe
PID 3964 wrote to memory of 2012	3964	cmd.exe	timeout.exe

C:\Users\Admin\AppData\Local\Temp\EbookReader2019.exe
"C:\Users\Admin\AppData\Local\Temp\EbookReader2019.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:644

C:\Program Files (x86)\Margin\Marg\1.exe
"C:\Program Files (x86)\Margin\Marg\1.exe"
2⤵
- 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
- Suspicious use of WriteProcessMemory
PID:3144

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c rd /s /q C:\ProgramData\jpUUn1lwv & timeout 2 & del /f /q "C:\Program Files (x86)\Margin\Marg\1.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:3964

C:\Windows\SysWOW64\timeout.exe
timeout 2
4⤵
- Delays execution with timeout.exe
PID:2012

C:\Program Files (x86)\Margin\Marg\2.exe
"C:\Program Files (x86)\Margin\Marg\2.exe"
2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:1680

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Margin\Marg\1.exe
MD5
987a9a9e0d4bbad66a9b823b3f939bc1

SHA1
b1e733fcf656d37326d12650406676903f10090a

SHA256
15f2a0a15572b7e7d229f7c309f3f4599aa7404b18f020b1fdb8518e584a48fe

SHA512
791fff5b437ab8ac856cdb70b366897e90695235ca73c06320f638957bf8c007e6aa5eba6fd34a883abcd2f0748822490b7716b301b22a388828731b2bab486d

Download Submit
C:\Program Files (x86)\Margin\Marg\1.exe
MD5
987a9a9e0d4bbad66a9b823b3f939bc1

SHA1
b1e733fcf656d37326d12650406676903f10090a

SHA256
15f2a0a15572b7e7d229f7c309f3f4599aa7404b18f020b1fdb8518e584a48fe

SHA512
791fff5b437ab8ac856cdb70b366897e90695235ca73c06320f638957bf8c007e6aa5eba6fd34a883abcd2f0748822490b7716b301b22a388828731b2bab486d

Download Submit
C:\Program Files (x86)\Margin\Marg\2.exe
MD5
c9cd7540515bf1b247b61683e37c6137

SHA1
7ecdf3f713d77cda0ac4c2589f5bd1d96375999f

SHA256
292cd3448949482950fbfbe79117db0758d0d4b45f6dea494f63aecc7a99fedd

SHA512
333be7de8c9eab112c8463a8522df65ac02035620d4e3aa604db7323600233c7b6e084f80ebfc0f231662863a6de8efa2a8d22c9d583f54d20159ca16cab3bf6

Download Submit
C:\ProgramData\jpUUn1lwv\47283761.txt
MD5
550cc6486c1ac1d65c8f1b14517a8294

SHA1
6f7b60b1f5b90ac815ab56c78cd7a5de05311fe1

SHA256
176bf49d4a7f854a30e1fb19acc33650ad5531a95bba23a9b7108b0129d15e9b

SHA512
eb29aefebe6d2ce5d06082c9ea8750de5cf5141e51ecc39457362bd4e8c1ec0313801f805b8b7ef6eaaf24d3e6b5d3ed2912216728ed5308165c00b17dc6f726

Download Submit
C:\ProgramData\jpUUn1lwv\Files\_Info.txt
MD5
0ae4242c23dafa4ebf3bf432243ef321

SHA1
7dfc93a6a55041eda0ab0b5171762a7db67c27d1

SHA256
ed631e4aba5e6a974f12e21595541353e8084e1913f7e07031997ce0535bbf39

SHA512
25a0cf171fe4da56f07f23e2adb8d280413fd05b03240dc6c0c5cdd624c6e13955bafb724fef3aa17f2f1e1f38d53c7da784b37f7abbb847f252ff728f845c74

Download Submit
C:\ProgramData\jpUUn1lwv\Files\_Screen.jpg
MD5
1fe57b3ddd609be2f18279235fc849a5

SHA1
9971609a141521c4da8809cc89a88e54890b995f

SHA256
730cb901aec059f8f8e098edd4922ae1e267ea13606140a1305ccf32e5e74427

SHA512
4d439eb0322a389af04431b53ac16d1d7e2276ad791c7046888b5784954ea18208eb64bd65684ad3e7072d5af522b0e7f33d5ad59142253338cbbf3c1f845e2b

Download Submit
C:\ProgramData\jpUUn1lwv\JEHOPE~1.ZIP
MD5
586333896674aa7372dcbdb4dfbf3f80

SHA1
9dd916998e073f162c1f8a3fb38a0bb3ba92df07

SHA256
b5bfda54a0e9f67a0792a5927128b37494bdca0e6ca3f752078a0ad450aae61b

SHA512
d13fa4d527cf9450b193ea79bb47e83cf98e6bf6ce85ec4083e631d0032a73e67ca161e35885becdc32494aad835623f766716d51d1a33fc0cb7925476657a7c

Download Submit
C:\ProgramData\jpUUn1lwv\MOZ_CO~1.DB
MD5
89d4b62651fa5c864b12f3ea6b1521cb

SHA1
570d48367b6b66ade9900a9f22d67d67a8fb2081

SHA256
22f1159db346d2cc8f4fa544796cc9d243a5737110a17d8e3755a2448404ce70

SHA512
e6d3109c5e2aef98a63f42eebe3b10feedb1a8c81d7823380553f84d2d6585f328c18f02e72c3e5c98ace7ffedfb6214a4ea6c87e85cefceada8e630f8df61ff

Download Submit
\Users\Admin\AppData\Local\Temp\nsv8738.tmp\UAC.dll
MD5
adb29e6b186daa765dc750128649b63d

SHA1
160cbdc4cb0ac2c142d361df138c537aa7e708c9

SHA256
2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08

SHA512
b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada

Download Submit
memory/1680-42-0x0000000009D90000-0x0000000009D91000-memory.dmp

Filesize
4KB

Download
memory/1680-43-0x0000000009F80000-0x0000000009F81000-memory.dmp

Filesize
4KB

Download
memory/1680-55-0x0000000009FD0000-0x0000000009FD1000-memory.dmp

Filesize
4KB

Download
memory/1680-54-0x0000000009FF0000-0x0000000009FF1000-memory.dmp

Filesize
4KB

Download
memory/1680-53-0x000000000A0C0000-0x000000000A0C1000-memory.dmp

Filesize
4KB

Download
memory/1680-52-0x0000000009FC0000-0x0000000009FC1000-memory.dmp

Filesize
4KB

Download
memory/1680-51-0x000000000A010000-0x000000000A011000-memory.dmp

Filesize
4KB

Download
memory/1680-50-0x000000000A090000-0x000000000A091000-memory.dmp

Filesize
4KB

Download
memory/1680-49-0x000000000A0A0000-0x000000000A0A1000-memory.dmp

Filesize
4KB

Download
memory/1680-20-0x0000000000000000-mapping.dmp

Download
memory/1680-47-0x0000000009F20000-0x0000000009F21000-memory.dmp

Filesize
4KB

Download
memory/1680-48-0x0000000009F10000-0x0000000009F11000-memory.dmp

Filesize
4KB

Download
memory/1680-46-0x0000000009EC0000-0x0000000009EC1000-memory.dmp

Filesize
4KB

Download
memory/1680-45-0x0000000009F30000-0x0000000009F31000-memory.dmp

Filesize
4KB

Download
memory/1680-44-0x000000000A070000-0x000000000A071000-memory.dmp

Filesize
4KB

Download
memory/1680-40-0x0000000000401000-0x000000000045D000-memory.dmp

Filesize
368KB

Download
memory/1680-41-0x0000000009E00000-0x0000000009E01000-memory.dmp

Filesize
4KB

Download
memory/1680-28-0x00000000098B0000-0x00000000098B1000-memory.dmp

Filesize
4KB

Download
memory/1680-29-0x000000000A0B0000-0x000000000A0B1000-memory.dmp

Filesize
4KB

Download
memory/1680-30-0x00000000098B0000-0x00000000098B1000-memory.dmp

Filesize
4KB

Download
memory/1680-32-0x0000000009DE0000-0x0000000009DE1000-memory.dmp

Filesize
4KB

Download
memory/1680-34-0x0000000009E10000-0x0000000009E11000-memory.dmp

Filesize
4KB

Download
memory/1680-33-0x0000000009D80000-0x0000000009D81000-memory.dmp

Filesize
4KB

Download
memory/1680-35-0x0000000009DC0000-0x0000000009DC1000-memory.dmp

Filesize
4KB

Download
memory/1680-37-0x0000000009DB0000-0x0000000009DB1000-memory.dmp

Filesize
4KB

Download
memory/1680-36-0x0000000009DF0000-0x0000000009DF1000-memory.dmp

Filesize
4KB

Download
memory/1680-39-0x0000000009F60000-0x0000000009F61000-memory.dmp

Filesize
4KB

Download
memory/1680-38-0x0000000009DD0000-0x0000000009DD1000-memory.dmp

Filesize
4KB

Download
memory/2012-27-0x0000000000000000-mapping.dmp

Download
memory/3144-12-0x0000000004D90000-0x0000000004D91000-memory.dmp

Filesize
4KB

Download
memory/3144-17-0x0000000004E00000-0x0000000004E01000-memory.dmp

Filesize
4KB

Download
memory/3144-11-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

Filesize
4KB

Download
memory/3144-7-0x00000000053B0000-0x00000000053B1000-memory.dmp

Filesize
4KB

Download
memory/3144-8-0x0000000077DB4000-0x0000000077DB5000-memory.dmp

Filesize
4KB

Download
memory/3144-10-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

Filesize
4KB

Download
memory/3144-3-0x0000000000000000-mapping.dmp

Download
memory/3144-13-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/3144-9-0x0000000004DC0000-0x0000000004DC1000-memory.dmp

Filesize
4KB

Download
memory/3144-18-0x0000000004E10000-0x0000000004E11000-memory.dmp

Filesize
4KB

Download
memory/3144-6-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Filesize
4KB

Download
memory/3144-16-0x0000000004E20000-0x0000000004E21000-memory.dmp

Filesize
4KB

Download
memory/3144-15-0x0000000004E30000-0x0000000004E31000-memory.dmp

Filesize
4KB

Download
memory/3144-14-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

Filesize
4KB

Download
memory/3964-19-0x0000000000000000-mapping.dmp

Download