6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e

General

Target

6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe
Size

116KB
MD5

0cc84c9198c0f8114b93b6ad9fc7fea0
SHA1

856783c900821b9ada521077a903146cf26b7547
SHA256

6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e
SHA512

5948499c50dfff291fbcf8cb4ce4215843dba48d06fa58b2abdac1f0180d2d55e212f73026a47d58817eca14f4a79bd71c1e3f423edf878e3f75026219a6b264
SSDEEP

1536:IMASiLNFZdO//OE1C90AdDNo75J84L67uKPYgat85tEKcyc2VDcm06tqfVXhwwAF:I3vO//l1uH67T8P7Qga3KcyjbHCg92

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/0x0001000000022dfd-134.dat	aspack_v212_v242
behavioral2/files/0x0001000000022dfd-135.dat	aspack_v212_v242
behavioral2/files/0x0006000000022df7-140.dat	aspack_v212_v242
behavioral2/files/0x0006000000022df7-141.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
3468	1c1c28c1.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"	1c1c28c1.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0001000000022dfd-134.dat	upx
behavioral2/files/0x0001000000022dfd-135.dat	upx
behavioral2/memory/3468-136-0x00000000000D0000-0x00000000000F5000-memory.dmp	upx
behavioral2/memory/3468-137-0x00000000000D0000-0x00000000000F5000-memory.dmp	upx
behavioral2/memory/3468-138-0x00000000000D0000-0x00000000000F5000-memory.dmp	upx
behavioral2/files/0x0006000000022df7-140.dat	upx
behavioral2/files/0x0006000000022df7-141.dat	upx
behavioral2/memory/2516-142-0x0000000075840000-0x0000000075865000-memory.dmp	upx
behavioral2/memory/2516-143-0x0000000075840000-0x0000000075865000-memory.dmp	upx
behavioral2/memory/2516-145-0x0000000075840000-0x0000000075865000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
2516	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\4EED0B30.tmp	1c1c28c1.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	1c1c28c1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3468	1c1c28c1.exe
3468	1c1c28c1.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 3468	2640	6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe	84
PID 2640 wrote to memory of 3468	2640	6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe	84
PID 2640 wrote to memory of 3468	2640	6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe	84

C:\Users\Admin\AppData\Local\Temp\6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe
"C:\Users\Admin\AppData\Local\Temp\6f5fdbf2136b8238f2f81fe8288bcd76afc4b0fb22a2194471b6434020371a2e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2640
- C:\1c1c28c1.exe
  C:\1c1c28c1.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:3468

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:2516

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:\1c1c28c1.exe

Filesize
83KB

MD5
aec8154a2a499457a2ba4e1fab3c6f20

SHA1
3dee15136d62a29ef1f5b5e99cf89efa94c6e15f

SHA256
5233165c72533b728f7189f9f51f9b7ac2678586b93428bb917a38ff8eb97f06

SHA512
721078a4315993132701ee67e6387dd571508f1c54850c715008755e71b1942c3a41b4ff2e82de392fbc5713b973b90794a88897a17016205c08220f9ded515e

Download Submit
C:\1c1c28c1.exe

Filesize
83KB

MD5
aec8154a2a499457a2ba4e1fab3c6f20

SHA1
3dee15136d62a29ef1f5b5e99cf89efa94c6e15f

SHA256
5233165c72533b728f7189f9f51f9b7ac2678586b93428bb917a38ff8eb97f06

SHA512
721078a4315993132701ee67e6387dd571508f1c54850c715008755e71b1942c3a41b4ff2e82de392fbc5713b973b90794a88897a17016205c08220f9ded515e

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
9a86b418c86f9d13948065ec0ae19264

SHA1
01e5dd94a9a36a125816f3eec2af0c8d6bee3b8f

SHA256
a83f77a6010eb9550bcb668923c40022cd64ad8039f82a808a8a9c90a65c6ee8

SHA512
99b12506474656fff13b233af9bd27367d9f2bff10179a0992538259382a1c08d7abacbd4d7ff2effacd8b0a88389d2693a50fb1a2c944ac3b16568877fb7ac5

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

Filesize
83KB

MD5
89946df922e3ac9e727e2776b92a38da

SHA1
4f30513d9936fa7fff417d2280b1d2fa50dbf34c

SHA256
bfb545005626b4394cd42d9977d41a29d39b1bd45eca5a42f22cced712c623e8

SHA512
816511850a166ee3ed87baf2ccc5b8a8431120869762f4d2ce28173f54b77c3710c1f45345555aa8543238d89c31e49bd48c33c020aeb19d0ec29484e30c1ade

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

Filesize
83KB

MD5
89946df922e3ac9e727e2776b92a38da

SHA1
4f30513d9936fa7fff417d2280b1d2fa50dbf34c

SHA256
bfb545005626b4394cd42d9977d41a29d39b1bd45eca5a42f22cced712c623e8

SHA512
816511850a166ee3ed87baf2ccc5b8a8431120869762f4d2ce28173f54b77c3710c1f45345555aa8543238d89c31e49bd48c33c020aeb19d0ec29484e30c1ade

Download Submit
memory/2516-142-0x0000000075840000-0x0000000075865000-memory.dmp

Filesize
148KB

Download
memory/2516-143-0x0000000075840000-0x0000000075865000-memory.dmp

Filesize
148KB

Download
memory/2516-145-0x0000000075840000-0x0000000075865000-memory.dmp

Filesize
148KB

Download
memory/2640-132-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/2640-146-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/3468-136-0x00000000000D0000-0x00000000000F5000-memory.dmp

Filesize
148KB

Download
memory/3468-137-0x00000000000D0000-0x00000000000F5000-memory.dmp

Filesize
148KB

Download
memory/3468-138-0x00000000000D0000-0x00000000000F5000-memory.dmp

Filesize
148KB

Download
memory/3468-139-0x00000000026D0000-0x00000000066D0000-memory.dmp

Filesize
64.0MB

Download

Analysis

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