asyncrat | cc4dde06185d6ee70b8f88bf8ff2ddbfd4635fd6f8fdb62516cf6e19f4235b3e

General

Target

bogaziciuygulamam.exe
Size

96KB
MD5

dbc181309bdc8abdd3c082e8ad9cd081
SHA1

ae49fb0c23014468b0fb98b7be9a91557bef9b69
SHA256

cc4dde06185d6ee70b8f88bf8ff2ddbfd4635fd6f8fdb62516cf6e19f4235b3e
SHA512

8a121777cc4eab65626fd0d6673498360996662379f604528133bdfd49cb4e1cd4a6d9e9538cf69440026b90565c6a5ace95793848d371608e555cd2cbfca73b
SSDEEP

1536:3uMZ1TDlsPF/28eJIrJAUXb0uowBvQHnkdplm8Cx:3uM/ThsPF/28drJAUXbhLNQHnkzCx

Score

10^/10

asyncrat campain discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

campain

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:3636

91.92.247.224:6606

91.92.247.224:7707

91.92.247.224:8808

91.92.247.224:3636

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
ckbogazici.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 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000b0000000233c0-11.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	bogaziciuygulamam.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	ckbogazici.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bogaziciuygulamam.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ckbogazici.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1824	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
4108	schtasks.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe
2084	bogaziciuygulamam.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2084	bogaziciuygulamam.exe
Token: SeDebugPrivilege	3636	ckbogazici.exe
Token: SeDebugPrivilege	3636	ckbogazici.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 4124	2084	bogaziciuygulamam.exe	99
PID 2084 wrote to memory of 4124	2084	bogaziciuygulamam.exe	99
PID 2084 wrote to memory of 4124	2084	bogaziciuygulamam.exe	99
PID 2084 wrote to memory of 2596	2084	bogaziciuygulamam.exe	101
PID 2084 wrote to memory of 2596	2084	bogaziciuygulamam.exe	101
PID 2084 wrote to memory of 2596	2084	bogaziciuygulamam.exe	101
PID 2596 wrote to memory of 1824	2596	cmd.exe	103
PID 2596 wrote to memory of 1824	2596	cmd.exe	103
PID 2596 wrote to memory of 1824	2596	cmd.exe	103
PID 4124 wrote to memory of 4108	4124	cmd.exe	104
PID 4124 wrote to memory of 4108	4124	cmd.exe	104
PID 4124 wrote to memory of 4108	4124	cmd.exe	104
PID 2596 wrote to memory of 3636	2596	cmd.exe	106
PID 2596 wrote to memory of 3636	2596	cmd.exe	106
PID 2596 wrote to memory of 3636	2596	cmd.exe	106

C:\Users\Admin\AppData\Local\Temp\bogaziciuygulamam.exe
"C:\Users\Admin\AppData\Local\Temp\bogaziciuygulamam.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ckbogazici" /tr '"C:\Users\Admin\AppData\Roaming\ckbogazici.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4124
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ckbogazici" /tr '"C:\Users\Admin\AppData\Roaming\ckbogazici.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4108
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7FD9.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1824
- - C:\Users\Admin\AppData\Roaming\ckbogazici.exe
    "C:\Users\Admin\AppData\Roaming\ckbogazici.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4616,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=1008 /prefetch:8
1⤵
PID:636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4080,i,15336851255456239337,16379811035920490645,262144 --variations-seed-version --mojo-platform-channel-handle=3792 /prefetch:8
1⤵
PID:3128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7FD9.tmp.bat

Filesize
154B

MD5
269d703944970dfbf9ff0fca6fae2b47

SHA1
da2e7a32fe74f678d1329b867be1c1a754899baa

SHA256
d94009baf30948562640c3617e10ab5fe51db4bb603b0baa50834452b9d86e7e

SHA512
0d58d966301955af6272c494f4be623ca5e7b7ce5b6c93c8dce81cbdbcb4f6fa2240769b9d1b46d35fedd20243ec3e576b7dfe341a33bd875cebe1bbd0cb7543

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

Filesize
96KB

MD5
dbc181309bdc8abdd3c082e8ad9cd081

SHA1
ae49fb0c23014468b0fb98b7be9a91557bef9b69

SHA256
cc4dde06185d6ee70b8f88bf8ff2ddbfd4635fd6f8fdb62516cf6e19f4235b3e

SHA512
8a121777cc4eab65626fd0d6673498360996662379f604528133bdfd49cb4e1cd4a6d9e9538cf69440026b90565c6a5ace95793848d371608e555cd2cbfca73b

Download Submit
memory/2084-0-0x00000000749EE000-0x00000000749EF000-memory.dmp

Filesize
4KB

Download
memory/2084-1-0x00000000004A0000-0x00000000004BE000-memory.dmp

Filesize
120KB

Download
memory/2084-2-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/2084-3-0x0000000004F00000-0x0000000004F9C000-memory.dmp

Filesize
624KB

Download
memory/2084-9-0x00000000749E0000-0x0000000075190000-memory.dmp

Filesize
7.7MB

Download
memory/3636-13-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download
memory/3636-14-0x0000000074940000-0x00000000750F0000-memory.dmp

Filesize
7.7MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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