44caliber | c78c65574f46075aad9b0bdd6a93cae108cf0d07fa6c906d171d27699081ee4c

General

Target

4f552083461474d9a151b2ce139638b2.exe
Size

567KB
MD5

4f552083461474d9a151b2ce139638b2
SHA1

873a43d7253c0efc388048904bb72c37d5e0abaf
SHA256

c78c65574f46075aad9b0bdd6a93cae108cf0d07fa6c906d171d27699081ee4c
SHA512

4d454aee96622e9ddb57dbb6a8f965ea7830d57c136823a90e9c9307c75659791b7868142e2923e6be8b3dee3511e2dbad3d3c83422192d39189aabb42df779d
SSDEEP

12288:IXXy/9Gg3/MJBiotluv8/8gSHJ0iIKQR31h9szxj4B:qLg3/rB8/PSUbRlhck

Score

10^/10

44caliber zgrat rat spyware stealer

Malware Config

Signatures

44Caliber
An open source infostealer written in C#.
stealer 44caliber

Detect ZGRat V1 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000002315a-16.dat	family_zgrat_v1
behavioral2/memory/388-25-0x0000000000910000-0x00000000009C8000-memory.dmp	family_zgrat_v1

ZGRat
ZGRat is remote access trojan written in C#.
rat zgrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	4f552083461474d9a151b2ce139638b2.exe

Executes dropped EXE 2 IoCs

pid	Process
5008	CookieViewer.exe
388	Viewer.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
36	freegeoip.app
37	freegeoip.app

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Viewer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Viewer.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
388	Viewer.exe
388	Viewer.exe
388	Viewer.exe
388	Viewer.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4732	4f552083461474d9a151b2ce139638b2.exe
Token: SeDebugPrivilege	388	Viewer.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4732 wrote to memory of 5008	4732	4f552083461474d9a151b2ce139638b2.exe	92
PID 4732 wrote to memory of 5008	4732	4f552083461474d9a151b2ce139638b2.exe	92
PID 4732 wrote to memory of 5008	4732	4f552083461474d9a151b2ce139638b2.exe	92
PID 4732 wrote to memory of 388	4732	4f552083461474d9a151b2ce139638b2.exe	93
PID 4732 wrote to memory of 388	4732	4f552083461474d9a151b2ce139638b2.exe	93

C:\Users\Admin\AppData\Local\Temp\4f552083461474d9a151b2ce139638b2.exe
"C:\Users\Admin\AppData\Local\Temp\4f552083461474d9a151b2ce139638b2.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4732
- C:\Users\Admin\AppData\Local\Temp\CookieViewer.exe
  "C:\Users\Admin\AppData\Local\Temp\CookieViewer.exe"
  2⤵
  - Executes dropped EXE
  PID:5008
- C:\Users\Admin\AppData\Local\Temp\Viewer.exe
  "C:\Users\Admin\AppData\Local\Temp\Viewer.exe"
  2⤵
  - Executes dropped EXE
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CookieViewer.exe

Filesize
587KB

MD5
a92c0af180f49d98d7c82e59ed0f580c

SHA1
0c0ad8a98a6766ce871bf4f9a0785ae2e1d59085

SHA256
e207ed5fcf6e7f2f9d69ccc382285ef32e347b5d97e2b9607067f3ae5bcb71da

SHA512
324e8043ce70e5f49c16e2ca5e24cc2c6e7f3486076ef53148964b66d9b4f7d793cc4c3fa5a28ca170ff6bf6b4de5e748bd7e7df177f0f643c473e58eec9087c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Viewer.exe

Filesize
707KB

MD5
95e63e48cfcdb769f0971d0f6dc4cc98

SHA1
993577e8f00a0ca9d55150c0698d109ab97c4da7

SHA256
7e09520e58b1573a1b905e34c95054c04c6c635276a2044fb83341faee05491a

SHA512
16630e7845d5277fcbe939280174aae395b378e24a60cd196b72bffd86861bf3bd9f797a2b1bef2991043762288c4d135d26bb71938d8225cd5fd51542465eed

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
1KB

MD5
90b64b6d6c0d3903c452127f2245e766

SHA1
23c50744ab5e78dcd79e7f94d33292e8783a016f

SHA256
7b474b65079503f5b4959174dfe5ecb65e64e447b9afa884b0ac1efd464c36ac

SHA512
5cf4c65b991d9c1034d10bd5675ea63047d742e2cbe6f41a84163a70f5d760dbbc4c9a9080b16562159173b360aab94e806d381c42201bf6f468aaf37955d4d5

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
1KB

MD5
1e71d3008f4d6bdeb2a2b2f2f8fefe8a

SHA1
9adda87416f8854097823e7d287a82e58a5ea12c

SHA256
580a39eaa5b84a228437b4d5c29e736773a7045863829e4b8131fbfe8b9f2dfc

SHA512
b555ee35f49cf215556d1e26777b7486d5bcaadf0364f06e355d104e31fc982185412513562eb84676aa0e2ae6d6655d26ba982f57de827f4dd7f5cddb8cd607

Download Submit
C:\Users\Admin\AppData\Roaming\44\Process.txt

Filesize
494B

MD5
628bff5db0bd41231909a6789212bf51

SHA1
f00e16b40ba06fdd5640f8645ce8c946cb374432

SHA256
d82aa46b62de26e2e99b945c3523ec18e24d17d0e84a5d57c72af08d29296999

SHA512
dda21445fcaab86a7bdce1766c9fb4195c6bf81977e3ebd89c628a38eb2eb6d551779b538b9f4cf284fa79eaf30cee633c93b7ddc8b78a1f1944b7acb21a9abf

Download Submit
memory/388-154-0x000000001B740000-0x000000001B750000-memory.dmp

Filesize
64KB

Download
memory/388-25-0x0000000000910000-0x00000000009C8000-memory.dmp

Filesize
736KB

Download
memory/388-26-0x00007FFC8D6B0000-0x00007FFC8E171000-memory.dmp

Filesize
10.8MB

Download
memory/388-159-0x00007FFC8D6B0000-0x00007FFC8E171000-memory.dmp

Filesize
10.8MB

Download
memory/388-28-0x000000001B740000-0x000000001B750000-memory.dmp

Filesize
64KB

Download
memory/388-35-0x000000001C480000-0x000000001C9A8000-memory.dmp

Filesize
5.2MB

Download
memory/388-61-0x00007FFC8D6B0000-0x00007FFC8E171000-memory.dmp

Filesize
10.8MB

Download
memory/388-157-0x000000001B740000-0x000000001B750000-memory.dmp

Filesize
64KB

Download
memory/388-155-0x000000001B740000-0x000000001B750000-memory.dmp

Filesize
64KB

Download
memory/4732-27-0x00007FFC8D6B0000-0x00007FFC8E171000-memory.dmp

Filesize
10.8MB

Download
memory/4732-1-0x00007FFC8D6B0000-0x00007FFC8E171000-memory.dmp

Filesize
10.8MB

Download
memory/4732-2-0x00000000011C0000-0x00000000011C1000-memory.dmp

Filesize
4KB

Download
memory/4732-0-0x0000000000A90000-0x0000000000B22000-memory.dmp

Filesize
584KB

Download
memory/4732-3-0x000000001B790000-0x000000001B7A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads