asyncrat | 6d42ab03dc8bf128ef84fd8c6a33b113ac9961077f72ab94a353a5e4f05aac61

General

Target

fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
Size

71KB
MD5

fcf393b445d4f0b001d53e097db8e5fe
SHA1

8c46fdbab506cd8aa5cdec4a6347e9c655c387e3
SHA256

6d42ab03dc8bf128ef84fd8c6a33b113ac9961077f72ab94a353a5e4f05aac61
SHA512

d30371c10b63ce8a9649de204e19769f22b0e9c1a15938418556e79c4df2d80e72322f24afcfe5c0f2a6b02663c174c76f0e0c6c4bd923c1cf1f5b1e3fb4eacb
SSDEEP

1536:H9WXJ4FGFYQRVU6EkaS3Ystx7Adpf7PS5TSVHbFqZKdMF/gTwHMBy:UAw26Eka1sLeZ7PS5TSdFqZFoE

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

remalarm.ddns.net:6606

remalarm.ddns.net:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
10
install
true
install_file
Test.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2852-2-0x00000000032C0000-0x00000000032EC000-memory.dmp	family_asyncrat
behavioral2/memory/2852-7-0x0000000003200000-0x0000000003212000-memory.dmp	family_asyncrat
behavioral2/memory/4036-19-0x0000000005090000-0x00000000050A2000-memory.dmp	family_asyncrat
behavioral2/memory/4036-20-0x00000000058A0000-0x00000000058B0000-memory.dmp	family_asyncrat

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:

fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

Test.exe

pid process

4036 Test.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

1496 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2100 timeout.exe

pid	process
4036	Test.exe

pid	process
1496	schtasks.exe

pid	process
2100	timeout.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe

pid	process
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exeTest.exe

description pid process

Token: SeDebugPrivilege 2852 fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
Token: SeDebugPrivilege 4036 Test.exe

description	pid	process
Token: SeDebugPrivilege	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
Token: SeDebugPrivilege	4036	Test.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.execmd.execmd.exe

description	pid	process	target process
PID 2852 wrote to memory of 4584	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 2852 wrote to memory of 4584	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 2852 wrote to memory of 4584	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 2852 wrote to memory of 3800	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 2852 wrote to memory of 3800	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 2852 wrote to memory of 3800	2852	fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe	cmd.exe
PID 4584 wrote to memory of 1496	4584	cmd.exe	schtasks.exe
PID 4584 wrote to memory of 1496	4584	cmd.exe	schtasks.exe
PID 4584 wrote to memory of 1496	4584	cmd.exe	schtasks.exe
PID 3800 wrote to memory of 2100	3800	cmd.exe	timeout.exe
PID 3800 wrote to memory of 2100	3800	cmd.exe	timeout.exe
PID 3800 wrote to memory of 2100	3800	cmd.exe	timeout.exe
PID 3800 wrote to memory of 4036	3800	cmd.exe	Test.exe
PID 3800 wrote to memory of 4036	3800	cmd.exe	Test.exe
PID 3800 wrote to memory of 4036	3800	cmd.exe	Test.exe

C:\Users\Admin\AppData\Local\Temp\fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fcf393b445d4f0b001d53e097db8e5fe_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Test" /tr '"C:\Users\Admin\AppData\Roaming\Test.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:4584

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Test" /tr '"C:\Users\Admin\AppData\Roaming\Test.exe"'
3⤵
- Creates scheduled task(s)
PID:1496

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5D24.tmp.bat""
2⤵
- Suspicious use of WriteProcessMemory
PID:3800

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:2100

C:\Users\Admin\AppData\Roaming\Test.exe
"C:\Users\Admin\AppData\Roaming\Test.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4036

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5D24.tmp.bat
Filesize
148B

MD5
cf6e177f269c0ae7d091a951e4f2b68c

SHA1
9d0f74d116209348f73a644ea1f5a47c6166761c

SHA256
96b3cc9fcf859dabe8523d094dd583acae22852ce4397e16d9eb2389151ee79f

SHA512
b53abc8b52dd5941a24abb2a8b2f6a2714ab430c4adf84de69d0bac407fca315fafd941903c22b649285086e7914f1b552f6e407e440413c933bec1a7eae99c9

Download Submit
C:\Users\Admin\AppData\Roaming\Test.exe
Filesize
71KB

MD5
fcf393b445d4f0b001d53e097db8e5fe

SHA1
8c46fdbab506cd8aa5cdec4a6347e9c655c387e3

SHA256
6d42ab03dc8bf128ef84fd8c6a33b113ac9961077f72ab94a353a5e4f05aac61

SHA512
d30371c10b63ce8a9649de204e19769f22b0e9c1a15938418556e79c4df2d80e72322f24afcfe5c0f2a6b02663c174c76f0e0c6c4bd923c1cf1f5b1e3fb4eacb

Download Submit
memory/2852-8-0x0000000008190000-0x000000000822C000-memory.dmp

Filesize
624KB

Download
memory/2852-13-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/2852-4-0x0000000007E50000-0x0000000007EE2000-memory.dmp

Filesize
584KB

Download
memory/2852-5-0x0000000003170000-0x0000000003176000-memory.dmp

Filesize
24KB

Download
memory/2852-6-0x0000000005950000-0x0000000005960000-memory.dmp

Filesize
64KB

Download
memory/2852-7-0x0000000003200000-0x0000000003212000-memory.dmp

Filesize
72KB

Download
memory/2852-1-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/2852-3-0x0000000008400000-0x00000000089A4000-memory.dmp

Filesize
5.6MB

Download
memory/2852-2-0x00000000032C0000-0x00000000032EC000-memory.dmp

Filesize
176KB

Download
memory/2852-0-0x0000000000F10000-0x0000000000F28000-memory.dmp

Filesize
96KB

Download
memory/4036-18-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4036-19-0x0000000005090000-0x00000000050A2000-memory.dmp

Filesize
72KB

Download
memory/4036-20-0x00000000058A0000-0x00000000058B0000-memory.dmp

Filesize
64KB

Download
memory/4036-21-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4036-22-0x00000000058A0000-0x00000000058B0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads