asyncrat | a6d6386c28e2acfa95cf86abe531226b845e46ff4c96ad30e76b63cdae61b270

General

Target

NEW AUGUST PO no645678.exe
Size

156KB
MD5

305f2747892b5f6d71320299e5c0c577
SHA1

187f9a3d1c59de18b76f17a533adbf2cc23e8cae
SHA256

423654743684a77ccf595dc264bdf6dc6a0b61507d1743f25f7a4e32ce1e13dc
SHA512

1ff3bca50fed788224c0826270c1f0c760e1ba3f65f255c1110760f033180ba9558616a91c638fd10c8605e17cf140a6b98392a8988978c1d866cf29b20a5799

Score

10^/10

asyncrat 5 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6A

Botnet

5

C2

79.134.225.85:1515

kurtbloomberg.ddns.net:1515

Mutex

chsxzzvrmtz

Attributes

delay
0
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 11 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1936-54-0x0000000000880000-0x00000000008AE000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe	asyncrat
behavioral1/memory/272-63-0x0000000000E20000-0x0000000000E4E000-memory.dmp	asyncrat
behavioral1/memory/1704-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-73-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-74-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-75-0x000000000040C3BE-mapping.dmp	asyncrat
behavioral1/memory/1704-78-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1704-80-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

abobex.exeInstallUtil.exe

pid process

272 abobex.exe
1704 InstallUtil.exe
Loads dropped DLL 2 IoCs

Processes:

NEW AUGUST PO no645678.exeabobex.exe

pid process

1936 NEW AUGUST PO no645678.exe
272 abobex.exe

pid	process
272	abobex.exe
1704	InstallUtil.exe

pid	process
1936	NEW AUGUST PO no645678.exe
272	abobex.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\abobex = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\abobex.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

abobex.exe

description pid process target process

PID 272 set thread context of 1704 272 abobex.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

NEW AUGUST PO no645678.exeabobex.exeInstallUtil.exe

pid process

1936 NEW AUGUST PO no645678.exe
1936 NEW AUGUST PO no645678.exe
272 abobex.exe
272 abobex.exe
272 abobex.exe
1704 InstallUtil.exe

description	pid	process	target process
PID 272 set thread context of 1704	272	abobex.exe	InstallUtil.exe

pid	process
1936	NEW AUGUST PO no645678.exe
1936	NEW AUGUST PO no645678.exe
272	abobex.exe
272	abobex.exe
272	abobex.exe
1704	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

NEW AUGUST PO no645678.exeabobex.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1936	NEW AUGUST PO no645678.exe
Token: SeDebugPrivilege	272	abobex.exe
Token: SeDebugPrivilege	1704	InstallUtil.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

NEW AUGUST PO no645678.execmd.exeabobex.exe

description	pid	process	target process
PID 1936 wrote to memory of 1128	1936	NEW AUGUST PO no645678.exe	cmd.exe
PID 1936 wrote to memory of 1128	1936	NEW AUGUST PO no645678.exe	cmd.exe
PID 1936 wrote to memory of 1128	1936	NEW AUGUST PO no645678.exe	cmd.exe
PID 1936 wrote to memory of 1128	1936	NEW AUGUST PO no645678.exe	cmd.exe
PID 1128 wrote to memory of 956	1128	cmd.exe	reg.exe
PID 1128 wrote to memory of 956	1128	cmd.exe	reg.exe
PID 1128 wrote to memory of 956	1128	cmd.exe	reg.exe
PID 1128 wrote to memory of 956	1128	cmd.exe	reg.exe
PID 1936 wrote to memory of 272	1936	NEW AUGUST PO no645678.exe	abobex.exe
PID 1936 wrote to memory of 272	1936	NEW AUGUST PO no645678.exe	abobex.exe
PID 1936 wrote to memory of 272	1936	NEW AUGUST PO no645678.exe	abobex.exe
PID 1936 wrote to memory of 272	1936	NEW AUGUST PO no645678.exe	abobex.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe
PID 272 wrote to memory of 1704	272	abobex.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\NEW AUGUST PO no645678.exe
"C:\Users\Admin\AppData\Local\Temp\NEW AUGUST PO no645678.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v abobex /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1128

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v abobex /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe"
3⤵
- Adds Run key to start application
PID:956

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:272

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1704

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe
Filesize
156KB

MD5
305f2747892b5f6d71320299e5c0c577

SHA1
187f9a3d1c59de18b76f17a533adbf2cc23e8cae

SHA256
423654743684a77ccf595dc264bdf6dc6a0b61507d1743f25f7a4e32ce1e13dc

SHA512
1ff3bca50fed788224c0826270c1f0c760e1ba3f65f255c1110760f033180ba9558616a91c638fd10c8605e17cf140a6b98392a8988978c1d866cf29b20a5799

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe
Filesize
156KB

MD5
305f2747892b5f6d71320299e5c0c577

SHA1
187f9a3d1c59de18b76f17a533adbf2cc23e8cae

SHA256
423654743684a77ccf595dc264bdf6dc6a0b61507d1743f25f7a4e32ce1e13dc

SHA512
1ff3bca50fed788224c0826270c1f0c760e1ba3f65f255c1110760f033180ba9558616a91c638fd10c8605e17cf140a6b98392a8988978c1d866cf29b20a5799

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe
Filesize
156KB

MD5
305f2747892b5f6d71320299e5c0c577

SHA1
187f9a3d1c59de18b76f17a533adbf2cc23e8cae

SHA256
423654743684a77ccf595dc264bdf6dc6a0b61507d1743f25f7a4e32ce1e13dc

SHA512
1ff3bca50fed788224c0826270c1f0c760e1ba3f65f255c1110760f033180ba9558616a91c638fd10c8605e17cf140a6b98392a8988978c1d866cf29b20a5799

Download Submit
memory/272-65-0x00000000003E0000-0x00000000003F4000-memory.dmp

Filesize
80KB

Download
memory/272-63-0x0000000000E20000-0x0000000000E4E000-memory.dmp

Filesize
184KB

Download
memory/272-60-0x0000000000000000-mapping.dmp

Download
memory/272-66-0x0000000000520000-0x000000000052A000-memory.dmp

Filesize
40KB

Download
memory/956-58-0x0000000000000000-mapping.dmp

Download
memory/1128-57-0x0000000000000000-mapping.dmp

Download
memory/1704-70-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-73-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-74-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-75-0x000000000040C3BE-mapping.dmp

Download
memory/1704-78-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1704-80-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1936-56-0x0000000000240000-0x0000000000254000-memory.dmp

Filesize
80KB

Download
memory/1936-54-0x0000000000880000-0x00000000008AE000-memory.dmp

Filesize
184KB

Download
memory/1936-55-0x0000000074DD1000-0x0000000074DD3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads