4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4

General

Target

4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
Size

2.7MB
MD5

794bbae1b4268b972604d2e56c9c5c78
SHA1

99aa781ffa0aa667ca49b501cc418aa7aec59a0c
SHA256

4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4
SHA512

24fc04024cc6b3c87c1aaf51ad501e64bdb8f853280595a27b6fbc2c528370d18f704c3347d9d675c8d43a70263b75d01c74cd7e0b1b8403ae0b87f9e60fd9b0
SSDEEP

49152:eShySkASzCNzcvi57bxUxw2d6uIccnG3XJmYtUtXg8Aig:dqBQzcahitd6uxcG3dutXJg

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

irsetup.exe

pid process

1948 irsetup.exe

pid	process
1948	irsetup.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
behavioral1/memory/1948-65-0x0000000000400000-0x00000000007CC000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe	upx
behavioral1/memory/1948-68-0x0000000000400000-0x00000000007CC000-memory.dmp	upx

Loads dropped DLL 5 IoCs

Processes:

4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exeirsetup.exe

pid	process
1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
1948	irsetup.exe

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

System Information Discovery
T1082
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

irsetup.exe

pid process

1948 irsetup.exe
1948 irsetup.exe

pid	process
1948	irsetup.exe
1948	irsetup.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe

description	pid	process	target process
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe
PID 1184 wrote to memory of 1948	1184	4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe	irsetup.exe

C:\Users\Admin\AppData\Local\Temp\4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe
"C:\Users\Admin\AppData\Local\Temp\4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1184

C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
"C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe" __IRAOFF:1742706 "__IRAFN:C:\Users\Admin\AppData\Local\Temp\4f7b27ea9e1bed9cbc7e0c040f0dbf257e718748f96b9b87da1dfb0315bd8fa4.exe" "__IRCT:0" "__IRTSS:0" "__IRSID:S-1-5-21-999675638-2867687379-27515722-1000"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
PID:1948

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
C:\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\lua5.1.dll
Filesize
318KB

MD5
b5fc476c1bf08d5161346cc7dd4cb0ba

SHA1
280fac9cf711d93c95f6b80ac97d89cf5853c096

SHA256
12cb9b8f59c00ef40ea8f28bfc59a29f12dc28332bf44b1a5d8d6a8823365650

SHA512
17fa97f399287b941e958d2d42fe6adb62700b01d9dbe0c824604e8e06d903b330f9d7d8ffb109bfb7f6742f46e7e9cedad6981f0d94d629b8402d0a0174f697

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\irsetup.exe
Filesize
1.3MB

MD5
30dd6c9d0bf2e0e2ff06e07d07adbf79

SHA1
5ae18800c318408c5b975553b4d61d0266524648

SHA256
90036694098ac538f319d97f621e3171046c77dac6c0589862b898f645e0cd13

SHA512
b5ea4b89576e440af7759bb91fcf70ba82227bde4be7884e8c03b6569d2d538b79f4106cda6e2d990447c42d508642cf50c96f1e23c79ee2c7763535ae5af210

Download Submit
\Users\Admin\AppData\Local\Temp\_ir_sf_temp_0\lua5.1.dll
Filesize
318KB

MD5
b5fc476c1bf08d5161346cc7dd4cb0ba

SHA1
280fac9cf711d93c95f6b80ac97d89cf5853c096

SHA256
12cb9b8f59c00ef40ea8f28bfc59a29f12dc28332bf44b1a5d8d6a8823365650

SHA512
17fa97f399287b941e958d2d42fe6adb62700b01d9dbe0c824604e8e06d903b330f9d7d8ffb109bfb7f6742f46e7e9cedad6981f0d94d629b8402d0a0174f697

Download Submit
memory/1184-64-0x0000000002C50000-0x000000000301C000-memory.dmp

Filesize
3.8MB

Download
memory/1184-54-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

Download
memory/1184-67-0x0000000002C50000-0x000000000301C000-memory.dmp

Filesize
3.8MB

Download
memory/1948-59-0x0000000000000000-mapping.dmp

Download
memory/1948-65-0x0000000000400000-0x00000000007CC000-memory.dmp

Filesize
3.8MB

Download
memory/1948-68-0x0000000000400000-0x00000000007CC000-memory.dmp

Filesize
3.8MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads