asyncrat | 9180b650add0089b72e050e358d7cac79d5e482b605f07692f35b9a6d12d9fd8

General

Target

cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
Size

744KB
MD5

cf50ae69e12fe9da2b1f5793f517e281
SHA1

3a312594b112050ebb4fc437ad5ca351ab3c1fe5
SHA256

9180b650add0089b72e050e358d7cac79d5e482b605f07692f35b9a6d12d9fd8
SHA512

2ddf75fe9d1cab79de587fd23d5b6de639f27217ac4c50f295d6456f25e53eb95e3da8514978f6eaa5f80cf3462931e804a0454cfaddd82802cd8235189b3571
SSDEEP

12288:gi70uZvt2NjFmzPkK46kb4by7UZGR3p2gex3HWkXvfWnNJKURYeVFZQrT4y:g00uZvMNj5KDk0O7nRPqGk/fnle0T4

Score

10^/10

asyncrat null discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6

Botnet

null

C2

188.215.229.44:7900

Mutex

wucfjfzenbowqnj

Attributes

delay
5
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1048 set thread context of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102

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 3 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	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.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
1552	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
2836	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
Token: SeDebugPrivilege	2836	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1552	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	99
PID 1048 wrote to memory of 1552	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	99
PID 1048 wrote to memory of 1552	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	99
PID 1048 wrote to memory of 2856	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	101
PID 1048 wrote to memory of 2856	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	101
PID 1048 wrote to memory of 2856	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	101
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102
PID 1048 wrote to memory of 2836	1048	cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe	102

C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YjvUEUyTAJjLW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3236.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1552
- C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe"
  2⤵
  PID:2856
- C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2836

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\Microsoft\CLR_v4.0_32\UsageLogs\cf50ae69e12fe9da2b1f5793f517e281_JaffaCakes118.exe.log

Filesize
1KB

MD5
0935be101a4e34e520699d3f1974faed

SHA1
f0cafba784073a280996f5751994b4b856938859

SHA256
3f22b8f1925056e79638708d82cb8ebdaf22d409bcea2a79fe779cef2665583d

SHA512
3fd2236ac414612432c52ca9c810ce148a52678c04eac04e470fb1c4a918a6aaf4f55a31b73697c7b05a23d031bc428b309cbd93b4534fe789d10613f5ef123b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3236.tmp

Filesize
1KB

MD5
8d5e7224f35236a3336e147e96891175

SHA1
650f598ec8c17d14b4fa28ea69632d5e4af8ec89

SHA256
cf636b2249f3c6ab90e4b7bb7154df9530fada067c8e7e60c8d7d18d2f7af1c0

SHA512
22e46363869a19298951ed34481e58e9b1716e8d7a22edca22e94086abc19c668f16479ef2ba80a5ca1e1bd70bd3e5a66112b6707de69642e0582c3acb4e98c6

Download Submit
memory/1048-5-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/1048-11-0x0000000006FD0000-0x0000000007054000-memory.dmp

Filesize
528KB

Download
memory/1048-4-0x0000000005630000-0x00000000056CC000-memory.dmp

Filesize
624KB

Download
memory/1048-0-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/1048-6-0x00000000054A0000-0x00000000054AA000-memory.dmp

Filesize
40KB

Download
memory/1048-7-0x0000000005830000-0x000000000584A000-memory.dmp

Filesize
104KB

Download
memory/1048-8-0x00000000068F0000-0x0000000006C44000-memory.dmp

Filesize
3.3MB

Download
memory/1048-9-0x000000007442E000-0x000000007442F000-memory.dmp

Filesize
4KB

Download
memory/1048-10-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/1048-3-0x0000000005590000-0x0000000005622000-memory.dmp

Filesize
584KB

Download
memory/1048-12-0x0000000009600000-0x0000000009612000-memory.dmp

Filesize
72KB

Download
memory/1048-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

Filesize
5.6MB

Download
memory/1048-22-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/1048-1-0x0000000000A20000-0x0000000000AE0000-memory.dmp

Filesize
768KB

Download
memory/2836-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2836-21-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/2836-23-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/2836-24-0x0000000004EB0000-0x0000000004F16000-memory.dmp

Filesize
408KB

Download
memory/2836-25-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download
memory/2836-26-0x0000000074420000-0x0000000074BD0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads