56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6

General

Target

56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe
Size

130KB
MD5

8027cf3bcfa8a47388730d05688987c0
SHA1

19268bf643ed7dca63fff8991a2f48ebff570c8c
SHA256

56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6
SHA512

26b42bbfc6c043d1348a4cf587fb307b85a6c9b0817e0c9a12fd4c9b0d0b5d947b01574340d18d0f5cfdbd093770698f68190f2740830aece26f433ed7c726f4
SSDEEP

3072:GcR8lz5nxaeLVKlH66m8x8Nqp3MCaoVk:GRAeLUEOuNqmEV

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 5 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x0008000000005c51-56.dat	aspack_v212_v242
behavioral1/files/0x0008000000005c51-60.dat	aspack_v212_v242
behavioral1/files/0x00080000000126f1-61.dat	aspack_v212_v242
behavioral1/files/0x000b000000012330-69.dat	aspack_v212_v242
behavioral1/files/0x000b000000012330-68.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
944	26644358.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"	26644358.exe

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0008000000005c51-56.dat	upx
behavioral1/memory/944-59-0x00000000011E0000-0x0000000001204000-memory.dmp	upx
behavioral1/memory/944-58-0x00000000011E0000-0x0000000001204000-memory.dmp	upx
behavioral1/files/0x0008000000005c51-60.dat	upx
behavioral1/files/0x00080000000126f1-61.dat	upx
behavioral1/memory/944-65-0x00000000011E0000-0x0000000001204000-memory.dmp	upx
behavioral1/memory/944-67-0x0000000074A30000-0x0000000074A90000-memory.dmp	upx
behavioral1/files/0x000b000000012330-69.dat	upx
behavioral1/files/0x000b000000012330-68.dat	upx
behavioral1/memory/896-71-0x00000000745D0000-0x00000000745F4000-memory.dmp	upx
behavioral1/memory/896-72-0x00000000745D0000-0x00000000745F4000-memory.dmp	upx
behavioral1/memory/896-74-0x00000000745D0000-0x00000000745F4000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
944	26644358.exe
896	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	26644358.exe
File opened for modification	C:\Windows\SysWOW64\4C910500.tmp	26644358.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
944	26644358.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 852 wrote to memory of 944	852	56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe	27
PID 852 wrote to memory of 944	852	56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe	27
PID 852 wrote to memory of 944	852	56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe	27
PID 852 wrote to memory of 944	852	56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe	27

C:\Users\Admin\AppData\Local\Temp\56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe
"C:\Users\Admin\AppData\Local\Temp\56678c443f78d085763cb5477b872ec29afedb1006986f353443f0bcfdc8f1e6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:852
- C:\26644358.exe
  C:\26644358.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:944

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:896

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

Loading Replay Monitor...

Downloads

C:\26644358.exe

Filesize
96KB

MD5
918c251f0a0384e485075fd0d8a1c463

SHA1
010fba278154c56650f103209b52457002668031

SHA256
66ba3af4e7fbb97b82b397d561f47d65812babb55e6b404d1b0a8f990f9c8475

SHA512
3b46c440522d0161e2ead096f87f04c7be3301e402975e5b3bf2fec0306ee17978ad53a7becb04561d5a2721fc5cf7a027a3ccece15a09c7cd1e3cb8679731f1

Download Submit
C:\26644358.exe

Filesize
96KB

MD5
918c251f0a0384e485075fd0d8a1c463

SHA1
010fba278154c56650f103209b52457002668031

SHA256
66ba3af4e7fbb97b82b397d561f47d65812babb55e6b404d1b0a8f990f9c8475

SHA512
3b46c440522d0161e2ead096f87f04c7be3301e402975e5b3bf2fec0306ee17978ad53a7becb04561d5a2721fc5cf7a027a3ccece15a09c7cd1e3cb8679731f1

Download Submit
C:\Users\Infotmp.txt

Filesize
460B

MD5
29d9fc5bd06ac8c5cba5aa4a60ddf9dc

SHA1
7a57c7af05f6711076b26352f531c8b6395c0b75

SHA256
151be9157c2d9a060f6b858127826fb04ca48f65d2bb4ff66135a9018a8be1ff

SHA512
7ce8e46b7819494865d74b417dcfbef97be7c1585cd941de2026c981bce7e2e66bfa1d18ac99ca70e7f491ec3b07d6ae3fe1d406ff1e41f190c254fa4417706b

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

Filesize
96KB

MD5
c69d1b644b15f7bf5a9ed8675d9fad09

SHA1
e6f5ea3f168dc389786a7944af836e74e404e6da

SHA256
d7413b27e83358f24d0620a51c10b92d3821d87053213e5cecd9be8fae8b9af4

SHA512
9a88db798c0e1a83ef8a02cada7ced403ee920f0243c2b50ee0aa31f00539149162e4fe8b44ff9b7b2ccd0b4dfa51737c16e3549bd71deacf7a3281d38500082

Download Submit
\Windows\SysWOW64\4C910500.tmp

Filesize
96KB

MD5
c69d1b644b15f7bf5a9ed8675d9fad09

SHA1
e6f5ea3f168dc389786a7944af836e74e404e6da

SHA256
d7413b27e83358f24d0620a51c10b92d3821d87053213e5cecd9be8fae8b9af4

SHA512
9a88db798c0e1a83ef8a02cada7ced403ee920f0243c2b50ee0aa31f00539149162e4fe8b44ff9b7b2ccd0b4dfa51737c16e3549bd71deacf7a3281d38500082

Download Submit
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
96KB

MD5
c69d1b644b15f7bf5a9ed8675d9fad09

SHA1
e6f5ea3f168dc389786a7944af836e74e404e6da

SHA256
d7413b27e83358f24d0620a51c10b92d3821d87053213e5cecd9be8fae8b9af4

SHA512
9a88db798c0e1a83ef8a02cada7ced403ee920f0243c2b50ee0aa31f00539149162e4fe8b44ff9b7b2ccd0b4dfa51737c16e3549bd71deacf7a3281d38500082

Download Submit
memory/852-64-0x0000000000220000-0x0000000000244000-memory.dmp

Filesize
144KB

Download
memory/852-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/852-63-0x0000000000220000-0x0000000000244000-memory.dmp

Filesize
144KB

Download
memory/852-76-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/852-54-0x0000000074E41000-0x0000000074E43000-memory.dmp

Filesize
8KB

Download
memory/852-77-0x0000000000220000-0x0000000000226000-memory.dmp

Filesize
24KB

Download
memory/896-72-0x00000000745D0000-0x00000000745F4000-memory.dmp

Filesize
144KB

Download
memory/896-71-0x00000000745D0000-0x00000000745F4000-memory.dmp

Filesize
144KB

Download
memory/896-74-0x00000000745D0000-0x00000000745F4000-memory.dmp

Filesize
144KB

Download
memory/944-58-0x00000000011E0000-0x0000000001204000-memory.dmp

Filesize
144KB

Download
memory/944-59-0x00000000011E0000-0x0000000001204000-memory.dmp

Filesize
144KB

Download
memory/944-67-0x0000000074A30000-0x0000000074A90000-memory.dmp

Filesize
384KB

Download
memory/944-75-0x0000000074A30000-0x0000000074A90000-memory.dmp

Filesize
384KB

Download
memory/944-66-0x0000000002610000-0x0000000006610000-memory.dmp

Filesize
64.0MB

Download
memory/944-65-0x00000000011E0000-0x0000000001204000-memory.dmp

Filesize
144KB

Download

Analysis

Sharing