8f90021c1de28edf9f7ca578e10656ff634d027bfd3e0c20ff80a705235240ac

General

Target

a3bd4747bb8d2e00e078ea2d33f5c050.exe
Size

385KB
MD5

a3bd4747bb8d2e00e078ea2d33f5c050
SHA1

4b3c0f64ddef24923e134c5da9c100054dffe262
SHA256

8f90021c1de28edf9f7ca578e10656ff634d027bfd3e0c20ff80a705235240ac
SHA512

cacabc09a7573b69da7dab804d89e22784fa1ddf69ae4310cfc9c9f02515bd95a0e2269ebe8c499e3ea28920e34ba588a069116a392e47ca9c83249d27fe324d
SSDEEP

12288:8pUZjCLRYVRcigimR6oDPNsiDlaZpA0G3YB:8pUZ0RYFgsobGiuA9YB

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2272	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Executes dropped EXE 1 IoCs

pid	Process
2272	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
4	pastebin.com

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	a3bd4747bb8d2e00e078ea2d33f5c050.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	a3bd4747bb8d2e00e078ea2d33f5c050.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe
2272	a3bd4747bb8d2e00e078ea2d33f5c050.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2272	1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe	28
PID 1736 wrote to memory of 2272	1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe	28
PID 1736 wrote to memory of 2272	1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe	28
PID 1736 wrote to memory of 2272	1736	a3bd4747bb8d2e00e078ea2d33f5c050.exe	28

C:\Users\Admin\AppData\Local\Temp\a3bd4747bb8d2e00e078ea2d33f5c050.exe
"C:\Users\Admin\AppData\Local\Temp\a3bd4747bb8d2e00e078ea2d33f5c050.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\a3bd4747bb8d2e00e078ea2d33f5c050.exe
  C:\Users\Admin\AppData\Local\Temp\a3bd4747bb8d2e00e078ea2d33f5c050.exe
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Modifies system certificate store
  - Suspicious use of UnmapMainImage
  PID:2272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab451D.tmp

Filesize
65KB

MD5
ac05d27423a85adc1622c714f2cb6184

SHA1
b0fe2b1abddb97837ea0195be70ab2ff14d43198

SHA256
c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

SHA512
6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar455F.tmp

Filesize
171KB

MD5
9c0c641c06238516f27941aa1166d427

SHA1
64cd549fb8cf014fcd9312aa7a5b023847b6c977

SHA256
4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

SHA512
936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

Download Submit
\Users\Admin\AppData\Local\Temp\a3bd4747bb8d2e00e078ea2d33f5c050.exe

Filesize
385KB

MD5
3818034ecb7990e8592f8ba44a9c642b

SHA1
65963f9d3cbee3aea6a1c0e7f4ed1ce7bf844858

SHA256
b9dcee789e135c15bea2a077f0256d28351f2d324e4302705f87c366d44e97e1

SHA512
776a0e10c2079a2770f00404736af7ad57dd352e774cd6a955a83b8cfc9daa8593c44bf13900d3710a13d1de130f031b8215d70946b119f451da298ca45035ed

Download Submit
memory/1736-0-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1736-14-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1736-12-0x0000000002E60000-0x0000000002EC6000-memory.dmp

Filesize
408KB

Download
memory/1736-1-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1736-2-0x0000000001470000-0x00000000014D6000-memory.dmp

Filesize
408KB

Download
memory/2272-17-0x0000000000320000-0x0000000000386000-memory.dmp

Filesize
408KB

Download
memory/2272-22-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/2272-25-0x0000000001470000-0x00000000014CF000-memory.dmp

Filesize
380KB

Download
memory/2272-76-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2272-78-0x000000000D6B0000-0x000000000D6EC000-memory.dmp

Filesize
240KB

Download
memory/2272-82-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download

Analysis

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