1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05

General

Target

1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe
Size

116KB
MD5

a00de9f387efc8c64b461b5f18000671
SHA1

664e373fdccb906bd8f2b3f1c0076e83f2cd5f5a
SHA256

1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05
SHA512

fef4cb19cfdc1b68e8520680839e8a48b6afb1e5e60931b24e59ccf877a9ea881540889480192e173742e3e91c09fc4d30dda07d7dbdefaa48a9b49d9f665482
SSDEEP

3072:Q3vO/AzdSH0RVNTUyV5EZUA9dHS2AVzH:ivfR60RV2tZdSNVz

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x000a000000022e12-135.dat	aspack_v212_v242
behavioral2/files/0x000a000000022e12-134.dat	aspack_v212_v242
behavioral2/files/0x0006000000022e23-140.dat	aspack_v212_v242
behavioral2/files/0x0006000000022e23-139.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
5064	7e9b3fa1.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	7e9b3fa1.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x000a000000022e12-135.dat	upx
behavioral2/files/0x000a000000022e12-134.dat	upx
behavioral2/memory/5064-136-0x0000000000650000-0x0000000000674000-memory.dmp	upx
behavioral2/memory/5064-137-0x0000000000650000-0x0000000000674000-memory.dmp	upx
behavioral2/memory/2708-141-0x0000000075550000-0x0000000075574000-memory.dmp	upx
behavioral2/memory/5064-144-0x0000000000650000-0x0000000000674000-memory.dmp	upx
behavioral2/memory/2708-143-0x0000000075550000-0x0000000075574000-memory.dmp	upx
behavioral2/files/0x0006000000022e23-140.dat	upx
behavioral2/files/0x0006000000022e23-139.dat	upx

Loads dropped DLL 1 IoCs

pid	Process
2708	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\37D702BC.tmp	7e9b3fa1.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	7e9b3fa1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5064	7e9b3fa1.exe
5064	7e9b3fa1.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 5064	4280	1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe	63
PID 4280 wrote to memory of 5064	4280	1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe	63
PID 4280 wrote to memory of 5064	4280	1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe	63

C:\Users\Admin\AppData\Local\Temp\1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe
"C:\Users\Admin\AppData\Local\Temp\1d7e352b6a1be5297b84c71a3ca31717e1644504ae229fef8e00ef210908ed05.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4280
- C:\7e9b3fa1.exe
  C:\7e9b3fa1.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:5064

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:2708

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\7e9b3fa1.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\7e9b3fa1.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
edce5daf38d31b178efc4a0fab0ff320

SHA1
e753953b53732086a71a4bc14f370385a14519a4

SHA256
c254c15ceb8954342cdce2794ff674ddcae03da37d8700277deeeaf43e445850

SHA512
006d01ac881e14655e6c145ec3b71660153c2b7654e53f37cbdaa6c19ed605660bd7955cb6537d0f2b3e794a09ed0e7bd0f038f256d0216c20a2d62bcd57bacc

Download Submit
C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
79KB

MD5
8428a8d94dca536c2d3533d87f48c164

SHA1
d26e83a55bd507a35ab7a4d732160c24d68b56a3

SHA256
0279bc6ad6f3f6f20266eabde3718c85aa3c80a3cd647f1bb05f2640ebfebdb9

SHA512
0cd2f8465ff4222b22f791d71aa07b1ce97d9c430b2ae77de0de04f2aef42dd69545a90914c6a5c2bda4c775ee6523396dd4c49987b4dd9c2e4e98156a66fa35

Download Submit
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

Filesize
79KB

MD5
8428a8d94dca536c2d3533d87f48c164

SHA1
d26e83a55bd507a35ab7a4d732160c24d68b56a3

SHA256
0279bc6ad6f3f6f20266eabde3718c85aa3c80a3cd647f1bb05f2640ebfebdb9

SHA512
0cd2f8465ff4222b22f791d71aa07b1ce97d9c430b2ae77de0de04f2aef42dd69545a90914c6a5c2bda4c775ee6523396dd4c49987b4dd9c2e4e98156a66fa35

Download Submit
memory/2708-143-0x0000000075550000-0x0000000075574000-memory.dmp

Filesize
144KB

Download
memory/2708-141-0x0000000075550000-0x0000000075574000-memory.dmp

Filesize
144KB

Download
memory/4280-132-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/5064-138-0x0000000002C10000-0x0000000006C10000-memory.dmp

Filesize
64.0MB

Download
memory/5064-144-0x0000000000650000-0x0000000000674000-memory.dmp

Filesize
144KB

Download
memory/5064-137-0x0000000000650000-0x0000000000674000-memory.dmp

Filesize
144KB

Download
memory/5064-136-0x0000000000650000-0x0000000000674000-memory.dmp

Filesize
144KB

Download

Analysis

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