gozi_ifsb | a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2

General

Target

a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe
Size

275KB
MD5

686f5d3bd92ee9073621f952d5361a00
SHA1

f8e870214e59b48657e7e53b124c641e9eb1149f
SHA256

a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2
SHA512

e885ff035dc2802b9c705254e9b4469311ea7cae4c28b8c4b10a227e71013b248eee64fa28b4b515e68676b4b95c777eaf4ce673ce7adf75f2cc60d4725185cd
SSDEEP

6144:BXnvThU/Ln3RyTM5nSOEt5zpaiRhcuGE07v6+uMHWzIH:RnvdVQ3wNxRhTKj6oHZ

Score

10^/10

gozi_ifsb aspackv2 banker persistence trojan upx

Malware Config

Signatures

Gozi, Gozi IFSB
Gozi ISFB is a well-known and widely distributed banking trojan.
banker trojan gozi_ifsb

ASPack v2.12-2.42 4 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral2/files/0x0001000000022e16-134.dat	aspack_v212_v242
behavioral2/files/0x0001000000022e16-135.dat	aspack_v212_v242
behavioral2/files/0x0001000000022e19-140.dat	aspack_v212_v242
behavioral2/files/0x0001000000022e19-141.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4300	213d6515.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"	213d6515.exe

UPX packed file 10 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0001000000022e16-134.dat	upx
behavioral2/files/0x0001000000022e16-135.dat	upx
behavioral2/memory/4300-136-0x0000000000450000-0x0000000000497000-memory.dmp	upx
behavioral2/memory/4300-137-0x0000000000450000-0x0000000000497000-memory.dmp	upx
behavioral2/memory/4300-138-0x0000000000450000-0x0000000000497000-memory.dmp	upx
behavioral2/files/0x0001000000022e19-140.dat	upx
behavioral2/files/0x0001000000022e19-141.dat	upx
behavioral2/memory/3560-142-0x00000000751A0000-0x00000000751E7000-memory.dmp	upx
behavioral2/memory/3560-143-0x00000000751A0000-0x00000000751E7000-memory.dmp	upx
behavioral2/memory/3560-145-0x00000000751A0000-0x00000000751E7000-memory.dmp	upx

Loads dropped DLL 1 IoCs

pid	Process
3560	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\1FFE0B74.tmp	213d6515.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	213d6515.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4300	213d6515.exe
4300	213d6515.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 4300	920	a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe	82
PID 920 wrote to memory of 4300	920	a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe	82
PID 920 wrote to memory of 4300	920	a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe	82

C:\Users\Admin\AppData\Local\Temp\a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe
"C:\Users\Admin\AppData\Local\Temp\a55d17e63fe5cd059359865c49b57f144245af936118cf7757a6e6ac28d645d2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:920
- C:\213d6515.exe
  C:\213d6515.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:4300

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs -s FastUserSwitchingCompatibility
1⤵
- Loads dropped DLL
PID:3560

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:\213d6515.exe

Filesize
221KB

MD5
b3d1699bac5f4682cda6ca7676f8d333

SHA1
009fae507bc8b45b2a6e4f6e3753f60c96d3d692

SHA256
62e55bf4c88ceb6ca6ac53a2b3be0144c8939b4d576676f00182ef8bd5117218

SHA512
1a22e86d20b3f0cdae51bdef481caf3c83d1c5650c8566efef0bee941b5c4ddaf9d73d60b615de381c7d2e68a96cb118112898afb111ac41b68380a8ecffd571

Download Submit
C:\213d6515.exe

Filesize
221KB

MD5
b3d1699bac5f4682cda6ca7676f8d333

SHA1
009fae507bc8b45b2a6e4f6e3753f60c96d3d692

SHA256
62e55bf4c88ceb6ca6ac53a2b3be0144c8939b4d576676f00182ef8bd5117218

SHA512
1a22e86d20b3f0cdae51bdef481caf3c83d1c5650c8566efef0bee941b5c4ddaf9d73d60b615de381c7d2e68a96cb118112898afb111ac41b68380a8ecffd571

Download Submit
C:\Users\Infotmp.txt

Filesize
724B

MD5
11cd31668649a5d2627eb249ae6eee6b

SHA1
fdeb8695f4e734a0a61e60eaa80199b82bbb565c

SHA256
7172bd3d287db1160182aef078d723fe1699e739ee47099da25f3258a84080fd

SHA512
3a45ca2446f29f89f21d24776f1323725d9a1bf0ba2f8765af1174c7baf91cd497db5374ccc3a9ab90effba9f6827e221b7467cff07fb455ce3e37c0efdfb3fd

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

Filesize
221KB

MD5
0669d63a75b1858b346fc2e650ab3e48

SHA1
52529e1ebebdd2d3c447f6044f64639e517d9ef4

SHA256
e74d7fd196f966eb88d82c5396181e0c7e159080a173bc69d207ee3a24d4728e

SHA512
af0d747f01a91a09f21e4b68258f6f285fd502f2b021dc25574a343a20f3a1abd0b1a86129385a4d9eada81808ea32ed9718c606ad002721a1b96b31c38a39c8

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

Filesize
221KB

MD5
0669d63a75b1858b346fc2e650ab3e48

SHA1
52529e1ebebdd2d3c447f6044f64639e517d9ef4

SHA256
e74d7fd196f966eb88d82c5396181e0c7e159080a173bc69d207ee3a24d4728e

SHA512
af0d747f01a91a09f21e4b68258f6f285fd502f2b021dc25574a343a20f3a1abd0b1a86129385a4d9eada81808ea32ed9718c606ad002721a1b96b31c38a39c8

Download Submit
memory/920-132-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/920-146-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/920-147-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3560-142-0x00000000751A0000-0x00000000751E7000-memory.dmp

Filesize
284KB

Download
memory/3560-143-0x00000000751A0000-0x00000000751E7000-memory.dmp

Filesize
284KB

Download
memory/3560-145-0x00000000751A0000-0x00000000751E7000-memory.dmp

Filesize
284KB

Download
memory/4300-137-0x0000000000450000-0x0000000000497000-memory.dmp

Filesize
284KB

Download
memory/4300-138-0x0000000000450000-0x0000000000497000-memory.dmp

Filesize
284KB

Download
memory/4300-139-0x00000000023C0000-0x00000000063C0000-memory.dmp

Filesize
64.0MB

Download
memory/4300-136-0x0000000000450000-0x0000000000497000-memory.dmp

Filesize
284KB

Download

Analysis

Sharing