nymaim | 76b5a3b4fe6ef386d0427c2b163d629009ef7eb4408e56e503328f77445974c4

General

Target

file.exe
Size

1.2MB
MD5

007e45a7587b3d791ac88737ce8972c8
SHA1

f61699e8abbf0d7ef6f88eefb159ef5671e19d56
SHA256

76b5a3b4fe6ef386d0427c2b163d629009ef7eb4408e56e503328f77445974c4
SHA512

6d1c94eadd3188455b0e2c31c3860fa7e99af4e79922852c6f4485b841be8ed60fdbaba19c172ea36ea5489579928e9f5705599847e4f9a28f41f77e45558a35
SSDEEP

24576:q20IN77i8CfUtm9o2oYSedZ6wFaOOtdJr/QIyv5MgXC75ld1qSVpk:q2d7i8KUao2Se/stfQIyxUd1qapk

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

Processes:

file.tmpLitFiles137.exe6u89Vl2.exe

pid	Process
1980	file.tmp
740	LitFiles137.exe
3460	6u89Vl2.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

Processes:

LitFiles137.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	LitFiles137.exe

Loads dropped DLL 1 IoCs

Processes:

file.tmp

pid	Process
1980	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

Processes:

file.tmp

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\is-67Q2L.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-GV57T.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-O74LF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-3AFPF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-FCLER.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-MRCOF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-FUEUJ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-LNVVV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-2G8SH.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-SKPBL.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-013KQ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-A88P7.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-T2HFA.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-SG2MD.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	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

Processes:

taskkill.exe

pid	Process
960	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

LitFiles137.exe

pid	Process
740	LitFiles137.exe
740	LitFiles137.exe
740	LitFiles137.exe
740	LitFiles137.exe
740	LitFiles137.exe
740	LitFiles137.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description	pid	Process
Token: SeDebugPrivilege	960	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpLitFiles137.execmd.exe

description	pid	Process	procid_target
PID 4160 wrote to memory of 1980	4160	file.exe	81
PID 4160 wrote to memory of 1980	4160	file.exe	81
PID 4160 wrote to memory of 1980	4160	file.exe	81
PID 1980 wrote to memory of 740	1980	file.tmp	82
PID 1980 wrote to memory of 740	1980	file.tmp	82
PID 1980 wrote to memory of 740	1980	file.tmp	82
PID 740 wrote to memory of 3460	740	LitFiles137.exe	83
PID 740 wrote to memory of 3460	740	LitFiles137.exe	83
PID 740 wrote to memory of 3460	740	LitFiles137.exe	83
PID 740 wrote to memory of 4932	740	LitFiles137.exe	91
PID 740 wrote to memory of 4932	740	LitFiles137.exe	91
PID 740 wrote to memory of 4932	740	LitFiles137.exe	91
PID 4932 wrote to memory of 960	4932	cmd.exe	93
PID 4932 wrote to memory of 960	4932	cmd.exe	93
PID 4932 wrote to memory of 960	4932	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4160
- C:\Users\Admin\AppData\Local\Temp\is-BL8H1.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-BL8H1.tmp\file.tmp" /SL5="$701B0,1064270,212992,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:1980
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:740
  - - C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\6u89Vl2.exe
      4⤵
      Executes dropped EXE
      PID:3460
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4932
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:960

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

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Downloads

C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
849dda6937aa10993f8d279fccfa9965

SHA1
7c2ad5cac25dc9364da3ead8ccbe3c8550a4ab1d

SHA256
7622f4bf46ce2b2bcde7e19f8da5d3af964889e53d788478b437d42270f9d32b

SHA512
7cd015e1c73d676bb03ae95cd81e1807779c3ba81d8de80ad88c8962fcc9fc1986e9a43f91bbf1abb522f72cc96343007fc35b042b093f7f2c82d99b3541acea

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
849dda6937aa10993f8d279fccfa9965

SHA1
7c2ad5cac25dc9364da3ead8ccbe3c8550a4ab1d

SHA256
7622f4bf46ce2b2bcde7e19f8da5d3af964889e53d788478b437d42270f9d32b

SHA512
7cd015e1c73d676bb03ae95cd81e1807779c3ba81d8de80ad88c8962fcc9fc1986e9a43f91bbf1abb522f72cc96343007fc35b042b093f7f2c82d99b3541acea

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BL8H1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-BL8H1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-LSP3L.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\6u89Vl2.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6e1ce040-6208-11ed-b5ce-806e6f6e6963}\6u89Vl2.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/740-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/740-153-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/740-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/740-156-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/740-144-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/740-139-0x0000000000000000-mapping.dmp

Download
memory/740-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/960-155-0x0000000000000000-mapping.dmp

Download
memory/1980-134-0x0000000000000000-mapping.dmp

Download
memory/3460-145-0x0000000000000000-mapping.dmp

Download
memory/4160-136-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4160-152-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4160-132-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4160-157-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4932-154-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads