asyncrat | c92748428af1806d4ecc702bce8ad9abcac6b738e7208d3586450cb4944a87a9

Analysis

max time kernel
151s
max time network
151s
platform
windows7_x64
resource
win7v20210408
submitted
03/09/2021, 03:17

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General

Target
NewProject-9072551776254517715425441524255614.exe
Size 412KB
Sample210903-ds2n2abhh6
SHA256 c92748428af1806d4ecc702bce8ad9abcac6b738e7208d3586450cb4944a87a9
MD5 ec5f4f296db46e34b3b93e029259ac48
SHA1 20c065acae20ea619ede0d2c5e47b4caef93851f
SHA512 929d86dfcd4c505683ca724e77d0759d8f89d6c1a82d8968c7eb7d3328b27e143b7ffb1499ecf0da58d92c1d64b1a9bc3692a76f00276d7da0781d35e9f38af0
MD5 SHA1 SHA512

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

null:null

Mutex

chizzy25!@/@!7^UPCAZWSWAzZ!@@77()@yzY!

Attributes

aes_key
V6B3WWm7AeoSBJ7kmpBg5fHkLw9ZLNYZ
anti_detection
false
autorun
false
bdos
false
delay
ALIENCRYPTERLOGS
host
null
hwid
3
install_file
install_folder
%AppData%
mutex
chizzy25!@/@!7^UPCAZWSWAzZ!@@77()@yzY!
pastebin_config
https://pastebin.com/raw/xD5XgxCh
port
null
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/572-63-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/572-64-0x000000000040D0CE-mapping.dmp	asyncrat
behavioral1/memory/572-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1984	oraclecorporation.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 572	1640	NewProject-9072551776254517715425441524255614.exe	30

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

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

T1053

pid	Process
868	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	NewProject-9072551776254517715425441524255614.exe
Token: SeDebugPrivilege	572	RegAsm.exe
Token: SeDebugPrivilege	1984	oraclecorporation.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 572	1640	NewProject-9072551776254517715425441524255614.exe	30
PID 1640 wrote to memory of 1944	1640	NewProject-9072551776254517715425441524255614.exe	32
PID 1640 wrote to memory of 1944	1640	NewProject-9072551776254517715425441524255614.exe	32
PID 1640 wrote to memory of 1944	1640	NewProject-9072551776254517715425441524255614.exe	32
PID 1640 wrote to memory of 1944	1640	NewProject-9072551776254517715425441524255614.exe	32
PID 1640 wrote to memory of 1888	1640	NewProject-9072551776254517715425441524255614.exe	34
PID 1640 wrote to memory of 1888	1640	NewProject-9072551776254517715425441524255614.exe	34
PID 1640 wrote to memory of 1888	1640	NewProject-9072551776254517715425441524255614.exe	34
PID 1640 wrote to memory of 1888	1640	NewProject-9072551776254517715425441524255614.exe	34
PID 1944 wrote to memory of 868	1944	cmd.exe	36
PID 1944 wrote to memory of 868	1944	cmd.exe	36
PID 1944 wrote to memory of 868	1944	cmd.exe	36
PID 1944 wrote to memory of 868	1944	cmd.exe	36
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38
PID 976 wrote to memory of 1984	976	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\NewProject-9072551776254517715425441524255614.exe
"C:\Users\Admin\AppData\Local\Temp\NewProject-9072551776254517715425441524255614.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\oraclecorporation\oraclecorporation.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1944
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\oraclecorporation\oraclecorporation.exe'" /f
    3⤵
    - Creates scheduled task(s)
    PID:868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\NewProject-9072551776254517715425441524255614.exe" "C:\Users\Admin\AppData\Roaming\oraclecorporation\oraclecorporation.exe"
  2⤵
  PID:1888

C:\Windows\system32\taskeng.exe
taskeng.exe {00AB550F-3747-4546-871E-39FB6A56F618} S-1-5-21-2455352368-1077083310-2879168483-1000:QWOCTUPM\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:976
- C:\Users\Admin\AppData\Roaming\oraclecorporation\oraclecorporation.exe
  C:\Users\Admin\AppData\Roaming\oraclecorporation\oraclecorporation.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/572-68-0x00000000044A0000-0x00000000044A1000-memory.dmp

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memory/572-65-0x00000000769B1000-0x00000000769B3000-memory.dmp

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memory/572-66-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/572-63-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1640-60-0x00000000011B0000-0x00000000011B1000-memory.dmp

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memory/1640-62-0x0000000004D20000-0x0000000004D21000-memory.dmp

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memory/1984-75-0x0000000000830000-0x0000000000831000-memory.dmp

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memory/1984-77-0x0000000004B90000-0x0000000004B91000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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