nymaim | 48308397969bc470c24e9e3f1449683aa29207a1648d9002925db56c78aaa6f5

General

Target

file.exe
Size

1.5MB
MD5

4e1f36ec7d0a71fd2b61e0a0950ac1ed
SHA1

4c12eda2f354d108f9abc0d954c45c439226f609
SHA256

48308397969bc470c24e9e3f1449683aa29207a1648d9002925db56c78aaa6f5
SHA512

421119bb2d4f28726f051fb2a854a37fe4caebd1a344c9459a05e9ca122deeac30f585d5a9a2aa7febd7938a4bdbb1d0e0f70461b2152ee313b4f52262f4d6c4
SSDEEP

24576:220Sx++W5rjZ4AEBkVo16dKmw01NVNh+AlBa1bTfSnIQ6a7YFgXC75ld1qSVpk:228NvSAEXGKm9nlsU+ayd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1076	file.tmp
2280	MitFiles138.exe
2976	I7PeHrXlilman.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	MitFiles138.exe

Loads dropped DLL 1 IoCs

pid	Process
1076	file.tmp

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-IUMJH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-H7LLK.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LV4D8.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-G3OHD.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-CQQOM.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-2IJBD.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-T0G7O.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-SKJGQ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-F85EV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-2V9T8.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-KG8H2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LSHEG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-C17O8.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-M0RUN.tmp	file.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4268	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2280	MitFiles138.exe
2280	MitFiles138.exe
2280	MitFiles138.exe
2280	MitFiles138.exe
2280	MitFiles138.exe
2280	MitFiles138.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4268	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1268 wrote to memory of 1076	1268	file.exe	81
PID 1268 wrote to memory of 1076	1268	file.exe	81
PID 1268 wrote to memory of 1076	1268	file.exe	81
PID 1076 wrote to memory of 2280	1076	file.tmp	82
PID 1076 wrote to memory of 2280	1076	file.tmp	82
PID 1076 wrote to memory of 2280	1076	file.tmp	82
PID 2280 wrote to memory of 2976	2280	MitFiles138.exe	83
PID 2280 wrote to memory of 2976	2280	MitFiles138.exe	83
PID 2280 wrote to memory of 2976	2280	MitFiles138.exe	83
PID 2280 wrote to memory of 4196	2280	MitFiles138.exe	85
PID 2280 wrote to memory of 4196	2280	MitFiles138.exe	85
PID 2280 wrote to memory of 4196	2280	MitFiles138.exe	85
PID 4196 wrote to memory of 4268	4196	cmd.exe	87
PID 4196 wrote to memory of 4268	4196	cmd.exe	87
PID 4196 wrote to memory of 4268	4196	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\is-QN036.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QN036.tmp\file.tmp" /SL5="$801C4,1328040,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2280
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\I7PeHrXlilman.exe
      4⤵
      Executes dropped EXE
      PID:2976
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4196
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4268

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
50f452cddb58186b791cab0ae9101617

SHA1
f2b2e491fdf83962a18746ee0684c85d1ef38097

SHA256
60eb3de3e276bde68439b34732d4ef5ae472c0b31b6fbd74b2f8be1cb68b296e

SHA512
4b39bd46f3d3663c206719ce17d8c64ce99cd1d20354c9f6dffc9474a11344d6bc44eda588ff479c7885b3459bd21a52c4eb82a71aab65c38c680b182aeb1aeb

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
50f452cddb58186b791cab0ae9101617

SHA1
f2b2e491fdf83962a18746ee0684c85d1ef38097

SHA256
60eb3de3e276bde68439b34732d4ef5ae472c0b31b6fbd74b2f8be1cb68b296e

SHA512
4b39bd46f3d3663c206719ce17d8c64ce99cd1d20354c9f6dffc9474a11344d6bc44eda588ff479c7885b3459bd21a52c4eb82a71aab65c38c680b182aeb1aeb

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-3B0TE.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QN036.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-QN036.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\I7PeHrXlilman.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\I7PeHrXlilman.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1268-134-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1268-157-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1268-152-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1268-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/2280-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/2280-144-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/2280-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2280-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/2280-153-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/2280-156-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download

Analysis

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