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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3564-130-0x0000000000980000-0x00000000009AE000-memory.dmp	asyncrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe	asyncrat
behavioral2/memory/460-139-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

abobex.exeInstallUtil.exe

pid process

4204 abobex.exe
460 InstallUtil.exe

pid	process
4204	abobex.exe
460	InstallUtil.exe

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

Processes:

NEW AUGUST PO no645678.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	NEW AUGUST PO no645678.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
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\abobex = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\abobex.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

abobex.exe

description pid process target process

PID 4204 set thread context of 460 4204 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

description	pid	process	target process
PID 4204 set thread context of 460	4204	abobex.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

NEW AUGUST PO no645678.exeabobex.exeInstallUtil.exe

pid	process
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
3564	NEW AUGUST PO no645678.exe
4204	abobex.exe
4204	abobex.exe
4204	abobex.exe
460	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

NEW AUGUST PO no645678.exeabobex.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	3564	NEW AUGUST PO no645678.exe
Token: SeDebugPrivilege	4204	abobex.exe
Token: SeDebugPrivilege	460	InstallUtil.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

NEW AUGUST PO no645678.execmd.exeabobex.exe

description	pid	process	target process
PID 3564 wrote to memory of 4380	3564	NEW AUGUST PO no645678.exe	cmd.exe
PID 3564 wrote to memory of 4380	3564	NEW AUGUST PO no645678.exe	cmd.exe
PID 3564 wrote to memory of 4380	3564	NEW AUGUST PO no645678.exe	cmd.exe
PID 4380 wrote to memory of 3560	4380	cmd.exe	reg.exe
PID 4380 wrote to memory of 3560	4380	cmd.exe	reg.exe
PID 4380 wrote to memory of 3560	4380	cmd.exe	reg.exe
PID 3564 wrote to memory of 4204	3564	NEW AUGUST PO no645678.exe	abobex.exe
PID 3564 wrote to memory of 4204	3564	NEW AUGUST PO no645678.exe	abobex.exe
PID 3564 wrote to memory of 4204	3564	NEW AUGUST PO no645678.exe	abobex.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	abobex.exe	InstallUtil.exe
PID 4204 wrote to memory of 460	4204	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⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3564

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:4380

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:3560

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\abobex.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4204

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:460

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

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
memory/460-139-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/460-138-0x0000000000000000-mapping.dmp

Download
memory/460-142-0x0000000005780000-0x00000000057E6000-memory.dmp

Filesize
408KB

Download
memory/3560-134-0x0000000000000000-mapping.dmp

Download
memory/3564-130-0x0000000000980000-0x00000000009AE000-memory.dmp

Filesize
184KB

Download
memory/3564-132-0x0000000005C50000-0x0000000005CE2000-memory.dmp

Filesize
584KB

Download
memory/3564-131-0x0000000006120000-0x00000000066C4000-memory.dmp

Filesize
5.6MB

Download
memory/4204-135-0x0000000000000000-mapping.dmp

Download
memory/4380-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads