asyncrat | 02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0

Analysis

max time kernel
17s
max time network
21s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
07-08-2024 11:31

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General

Target

02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe
Size

237KB
MD5

d450127ec998b5e2b630e160d2f7fd37
SHA1

601cb671b90b78470801910d06aa8a1eceb61100
SHA256

02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0
SHA512

fc9fe9b0e04469d48ca27718bf167c96fa659cd059126f0a34a7fba7200cf6f75a38ad0bc6c364c517c9cf02a511c0c47c3e3de02fae9f92def10100b1fb388f
SSDEEP

6144:cJLb1wF9kfK8rpClz0KBb6o589GHWHWujiSPbQ:cJ/gBuj/Ps

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

Attributes

delay
1
install
true
install_file
update.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/m5mgzzdQ

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00080000000120fc-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2824	update.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
2	pastebin.com
3	pastebin.com
4	7.tcp.eu.ngrok.io

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

System Information Discovery
T1082

Delays execution with timeout.exe 2 IoCs

evasion

pid	Process
2768	timeout.exe
2956	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2748	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe
Token: SeDebugPrivilege	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe
Token: SeDebugPrivilege	2824	update.exe
Token: SeDebugPrivilege	2824	update.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 2448	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	29
PID 1400 wrote to memory of 2448	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	29
PID 1400 wrote to memory of 2448	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	29
PID 1400 wrote to memory of 2792	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	30
PID 1400 wrote to memory of 2792	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	30
PID 1400 wrote to memory of 2792	1400	02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe	30
PID 2448 wrote to memory of 2748	2448	cmd.exe	33
PID 2448 wrote to memory of 2748	2448	cmd.exe	33
PID 2448 wrote to memory of 2748	2448	cmd.exe	33
PID 2792 wrote to memory of 2768	2792	cmd.exe	34
PID 2792 wrote to memory of 2768	2792	cmd.exe	34
PID 2792 wrote to memory of 2768	2792	cmd.exe	34
PID 2792 wrote to memory of 2824	2792	cmd.exe	35
PID 2792 wrote to memory of 2824	2792	cmd.exe	35
PID 2792 wrote to memory of 2824	2792	cmd.exe	35
PID 2824 wrote to memory of 2344	2824	update.exe	37
PID 2824 wrote to memory of 2344	2824	update.exe	37
PID 2824 wrote to memory of 2344	2824	update.exe	37
PID 2824 wrote to memory of 2980	2824	update.exe	39
PID 2824 wrote to memory of 2980	2824	update.exe	39
PID 2824 wrote to memory of 2980	2824	update.exe	39
PID 2344 wrote to memory of 2224	2344	cmd.exe	41
PID 2344 wrote to memory of 2224	2344	cmd.exe	41
PID 2344 wrote to memory of 2224	2344	cmd.exe	41
PID 2980 wrote to memory of 2956	2980	cmd.exe	42
PID 2980 wrote to memory of 2956	2980	cmd.exe	42
PID 2980 wrote to memory of 2956	2980	cmd.exe	42

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe
"C:\Users\Admin\AppData\Local\Temp\02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "update" /tr '"C:\Users\Admin\AppData\Roaming\update.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2748
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpFCF5.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2768
- - C:\Users\Admin\AppData\Roaming\update.exe
    "C:\Users\Admin\AppData\Roaming\update.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2824
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "update"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2344
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "update"
        5⤵
        
        PID:2224
  - - C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2F04.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2980
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab10F4.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar2E94.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp2F04.tmp.bat

Filesize
155B

MD5
d68c4798b3ebabc80a84838c5499c4cc

SHA1
fbfc03c6edce7f99788db3567f0a1803033c3dd8

SHA256
8427b3e51ddff9642173e184a97c7f6f410efa7769a2e93520e092038033425d

SHA512
07a3d53a31109ab1eaa8235ce7333de1955370454b112028bf2089cc3dd688163b49f13b2ab454a364ca6bcc0cecf7d3eafbe686eb9b6b5c5eb41fd9463550ea

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFCF5.tmp.bat

Filesize
150B

MD5
7550b2063356964d6c34bb4661d2a942

SHA1
172ae8eb8c27ba6fbc4e15ae18dc78bf9d648ad2

SHA256
af913e02e9a042b20e6d2cb65d56be8b29c008fa43184e55ff25845330b2130e

SHA512
e0638b021540f46f151cfeabffe68735a3529d7985f6d6758f1aa59ef9656fbdd1572b54cb9cc24206fde9a60a338864ee47fdd210bd438817ab9dac6382c5b1

Download Submit
C:\Users\Admin\AppData\Roaming\update.exe

Filesize
237KB

MD5
d450127ec998b5e2b630e160d2f7fd37

SHA1
601cb671b90b78470801910d06aa8a1eceb61100

SHA256
02cb8f411c6ae91fb1f59202d25096bd4e523569cb0d9332f97253ea9518dce0

SHA512
fc9fe9b0e04469d48ca27718bf167c96fa659cd059126f0a34a7fba7200cf6f75a38ad0bc6c364c517c9cf02a511c0c47c3e3de02fae9f92def10100b1fb388f

Download Submit
memory/1400-0-0x000007FEF68F3000-0x000007FEF68F4000-memory.dmp

Filesize
4KB

Download
memory/1400-1-0x0000000000A50000-0x0000000000A92000-memory.dmp

Filesize
264KB

Download
memory/1400-2-0x000007FEF68F0000-0x000007FEF72DC000-memory.dmp

Filesize
9.9MB

Download
memory/1400-11-0x000007FEF68F0000-0x000007FEF72DC000-memory.dmp

Filesize
9.9MB

Download
memory/1400-12-0x000007FEF68F0000-0x000007FEF72DC000-memory.dmp

Filesize
9.9MB

Download
memory/2824-17-0x00000000000C0000-0x0000000000102000-memory.dmp

Filesize
264KB

Download
memory/2824-34-0x000000001B8B0000-0x000000001B962000-memory.dmp

Filesize
712KB

Download