8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b

General

Target

8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe
Size

384KB
MD5

a0a73ec5a5f5ab5db498b9ac80cfb360
SHA1

e8e5187c4f89f58fe43f3b18b698ff594811417e
SHA256

8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b
SHA512

ad6e03a996d3bc20158cf4a62845bb21858f267a416a0339ff7481ceb705f0072bc68645511984fb711f50164b6a895cb6635b3f49cf62579d26a2aed4ec33c0
SSDEEP

6144:o1QVTR60RV2tZdSNVzNP6KkbR60RV2tZdSNVzNP6Kk+R60RV2tZdSNVz:g2dLVedwNdELVedwNdRLVedw

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/0x0003000000022d9c-134.dat	aspack_v212_v242
behavioral2/files/0x0003000000022d9c-135.dat	aspack_v212_v242
behavioral2/files/0x0003000000022dc3-140.dat	aspack_v212_v242
behavioral2/files/0x0003000000022dc3-139.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4172	7ae53886.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"	7ae53886.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0003000000022d9c-134.dat	upx
behavioral2/files/0x0003000000022d9c-135.dat	upx
behavioral2/memory/4172-136-0x0000000000420000-0x0000000000444000-memory.dmp	upx
behavioral2/memory/4172-137-0x0000000000420000-0x0000000000444000-memory.dmp	upx
behavioral2/files/0x0003000000022dc3-140.dat	upx
behavioral2/files/0x0003000000022dc3-139.dat	upx
behavioral2/memory/4864-141-0x0000000075790000-0x00000000757B4000-memory.dmp	upx
behavioral2/memory/4864-143-0x0000000075790000-0x00000000757B4000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
4864	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\2B4B0808.tmp	7ae53886.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	7ae53886.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1424	1608	WerFault.exe	62

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4172	7ae53886.exe
4172	7ae53886.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 4172	1608	8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe	81
PID 1608 wrote to memory of 4172	1608	8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe	81
PID 1608 wrote to memory of 4172	1608	8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe	81

C:\Users\Admin\AppData\Local\Temp\8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe
"C:\Users\Admin\AppData\Local\Temp\8a06a4caccb21f7c4464fb4213c67b0d25aa0ed96b104f64ec2178e2f984f52b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1608
- C:\7ae53886.exe
  C:\7ae53886.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:4172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 420
  2⤵
  - Program crash
  PID:1424

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 176 -p 1608 -ip 1608
1⤵
PID:1576

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:\7ae53886.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\7ae53886.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
9fa7200277272ee27f1d389f9ce6a007

SHA1
55ba2750930e86d2df366450e93e6be4e9174bba

SHA256
a82adf484d0bd9c223b5628470cd6ee1771f9c8dd58fa2004fa2499f92288264

SHA512
cc9430b2fa0f565b277afee2b5967dd62571c3c3a9c2bae92df4b5fecd409396617f4f0adff982515519b925b284f77490ecc549971aa91d3fc77090dfe82b82

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/1608-144-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/1608-132-0x0000000000400000-0x0000000000462000-memory.dmp

Filesize
392KB

Download
memory/4172-138-0x0000000002C00000-0x0000000006C00000-memory.dmp

Filesize
64.0MB

Download
memory/4172-137-0x0000000000420000-0x0000000000444000-memory.dmp

Filesize
144KB

Download
memory/4172-136-0x0000000000420000-0x0000000000444000-memory.dmp

Filesize
144KB

Download
memory/4864-141-0x0000000075790000-0x00000000757B4000-memory.dmp

Filesize
144KB

Download
memory/4864-143-0x0000000075790000-0x00000000757B4000-memory.dmp

Filesize
144KB

Download

Analysis

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