a5b12b05743152d34f9c008386e93b2496d3537f8c1c4aaca403ee09cf08c526

Analysis

max time kernel
133s
max time network
144s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
17-07-2023 18:06

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General

Target

a1c4f47574f17c_JC.exe
Size

79KB
MD5

a1c4f47574f17cccb1f996051000b8eb
SHA1

3ddebe6844565c047042ba2e5123226e68046d7a
SHA256

a5b12b05743152d34f9c008386e93b2496d3537f8c1c4aaca403ee09cf08c526
SHA512

35479a2eecff366215dacbc30012c989a4467f637bde31cb3b72af5c29725c28f65648d220fae3f7bba02d06535820d44769b96d236875d6d06d4cbfe992f56f
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalDSnUb:1nK6a+qdOOtEvwDpjQ

Score

7^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1824	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	a1c4f47574f17c_JC.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2236-54-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2236-69-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00080000000120e6-65.dat	upx
behavioral1/files/0x00080000000120e6-70.dat	upx
behavioral1/memory/1824-71-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00080000000120e6-80.dat	upx
behavioral1/memory/1824-81-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2236 wrote to memory of 1824	2236	a1c4f47574f17c_JC.exe	28
PID 2236 wrote to memory of 1824	2236	a1c4f47574f17c_JC.exe	28
PID 2236 wrote to memory of 1824	2236	a1c4f47574f17c_JC.exe	28
PID 2236 wrote to memory of 1824	2236	a1c4f47574f17c_JC.exe	28

C:\Users\Admin\AppData\Local\Temp\a1c4f47574f17c_JC.exe
"C:\Users\Admin\AppData\Local\Temp\a1c4f47574f17c_JC.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1824

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
79KB

MD5
480d1349b201f976b37604dabd3babbc

SHA1
3c91f3ac66fc8d3b647d1985b1aace1935e7ceaf

SHA256
136709486e68822d0c5ba3d9f7dd96b75a38e7f43f1711431785cc7074c6e095

SHA512
361c993748b4a4aa4e9f5585e6f273d191b6fc37b2495f6d246c0431323775717cf018afbe0cbe090ec1410b0414e0865d9a4d749fba866ff5d8af9c7d2e3a6a

Download Submit
C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
79KB

MD5
480d1349b201f976b37604dabd3babbc

SHA1
3c91f3ac66fc8d3b647d1985b1aace1935e7ceaf

SHA256
136709486e68822d0c5ba3d9f7dd96b75a38e7f43f1711431785cc7074c6e095

SHA512
361c993748b4a4aa4e9f5585e6f273d191b6fc37b2495f6d246c0431323775717cf018afbe0cbe090ec1410b0414e0865d9a4d749fba866ff5d8af9c7d2e3a6a

Download Submit
\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
79KB

MD5
480d1349b201f976b37604dabd3babbc

SHA1
3c91f3ac66fc8d3b647d1985b1aace1935e7ceaf

SHA256
136709486e68822d0c5ba3d9f7dd96b75a38e7f43f1711431785cc7074c6e095

SHA512
361c993748b4a4aa4e9f5585e6f273d191b6fc37b2495f6d246c0431323775717cf018afbe0cbe090ec1410b0414e0865d9a4d749fba866ff5d8af9c7d2e3a6a

Download Submit
memory/1824-73-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1824-71-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1824-74-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1824-81-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2236-69-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2236-68-0x00000000004E0000-0x00000000004F0000-memory.dmp

Filesize
64KB

Download
memory/2236-56-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2236-57-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2236-54-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2236-55-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download